Ams 2404 vs astm b733

Nickel plating produces hard and durable surfaces and is often used in applications that require both wear resistance and corrosion protection. Because the process employs an autocatalytic chemical reaction instead of electrical current, it deposits a reliable, repeatable coating of uniform thickness.

Electroless nickel plating provides the substrate with excellent corrosion protection, similar lubricity properties to plated chromium, and a hard, clean surface that is resistant to wear.

It effectively coats parts with sharp edges, deep recesses, seams, threads, and complex geometries. The process can also deposit nickel plate alloys with different percentage of phosphorus, ranging from 2—5 percent to up to 11—14 percent high phosphorus electroless nickel platingresulting in significantly different metallurgical properties.

The electroless nickel plating process has several distinct advantages over the traditional electrolytic nickel plating process. First, the electrolytic nickel plating process requires the application of an externally applied DC current, resulting in plating thickness that tends to be non-uniform; excess deposits can form on edges or corners of the substrate, where electrical current is typically higher.

Second, with high phosphorous electroless nickel plating, the plate itself is an amorphous alloy of nickel and phosphorous. The addition of phosphorous provides the deposit with more corrosion resistance, fewer magnetic properties high phosphorous varieties and a lower coefficient of friction than electrolytic nickel. Third, with the electroless process the plate is uniformly deposited, eliminating the need for post-plate machining on critical dimensions.

Electroless nickel plating is typically used in applications that require hardness, wear resistance, and corrosion protection. Such applications include a very wide range of uses, from common household goods such as knives, forks, and bathroom fixtures to industrial and military equipment, paper making machinery, transportation equipment, and oil field parts. Because of its exceptional hardness, high phosphorous electroless nickel plating is used to resurface and repair worn parts, where the coating is applied to the worn part which is then machined back to its original specifications.

Nickel plating can be used to protect substrates in corrosion environments that range from mild to extreme. Monitoring and control of the chemical bath is critical and can be challenging, and residual metal stress can occur if the plating process is not properly controlled. Toggle Navigation. Electroless Nickel plating vs. Electrolytic Nickel Plating The electroless nickel plating process has several distinct advantages over the traditional electrolytic nickel plating process.

ams 2404 vs astm b733

Applications Electroless nickel plating is typically used in applications that require hardness, wear resistance, and corrosion protection.Electroless Nickel plating ENalso known as autocatalytic nickel, is a micro crystalline to amorphous, hardenable nickel-phosphorous alloy coating. It offers a good barrier coating corrosion resistance. Electroless nickel is generally applied to a thickness range of 25 to microns 0.

Since no high or low current densities exist, a very uniform thickness of deposits over irregular shapes can be achieved. For many applications, electroless nickel plating is applied as a barrier coating under Hard Chromium to provide the ultimate in corrosion and wear resistance. Medical device plated with a duplex coating of 0. Visit our Resource Library for Design Recommendations.

Please fill out this brief form to access the free PDF download of U. After submitting, you'll be able to save the document locally. Electroless Nickel. Yes, I would like a representative to contact me.

MIL-C-26074 E Electroless Nickel Plating

Call now or email. Excellent corrosion resistance - dependent on phosphorous content hours per ASTM B are typical.

Durability good - but wear resistance is less than hard chromium. Deposits nickel uniformly - on any part geometry due to no current density distribution inherent in electrolytic processes. USC offers a proprietary method - for applying electroless nickel to aluminum alloys.Electroless nickel plating is an process that codeposits a nickel-phosphorous alloy without need for an externally applied electrical current.

The electroless nickel plating process occurs from a chemical reduction of the nickel ions within the electroless nickel solution onto a metallic substrate rather than deposition of the ions from an applied current. As a result, the electroless nickel deposit is free of many of the problems associated with traditional electrolytic nickel including edge buildup and non-uniform coating.

Electroless nickel deposits are extremely uniform, corrosion and erosion resistant and provide excellent lubricity. APT offers loose-piece barrel, rack and vibratory electroless nickel plating on nearly any metallic substrate including nearly any ferrous, cupreous and aluminum alloys as well as many exotic alloys.

The electroless nickel phosphorous content affects the properties of the deposit significantly including hardness, corrosion resistance and magnetism. Below is a brief overview of the electroless nickel plating provided by APT:. Electroless nickel plating is a unique plating process that does not require an external source of electrons for deposition as in traditional electrolytic plating.

Rather, electroless nickel is a nickel-phosphorous alloy deposited by a chemical reduction reaction from hypophosphite on a catalytic substrate without the application of external current.

Since there is no applied current during deposition, electroless nickel plating deposits are free from the common nonuniformity of traditional electrolytic deposits and can cover even extremely complex geometries with excellent uniformity see: What are the differences of electroless nickel over traditional electrolytic nickel in our Technical Library Plating Topics section. Any portion of a part that is equally wetted by the electroless nickel solution will plate uniformly including interior or ID features.

It is important to note that continual solution flow is required to maintain consistent deposition rates. As such, blind holes small inner diameters of tubing or fittings will often have reduced plating thickness. The codeposited phosphorus in the electroless nickel plating deposit increases the lubricity over that of traditional nickel plating and the percentage of phosphorus in the coating also affects deposit properties such as magnetism, corrosion resistance and hardness.

ams 2404 vs astm b733

In addition, a post-plate baking at temperatures above F can transition electroless nickel deposits from an amorphous as-plated state to a crystalline structure, greatly increasing hardness. Select the Electroless Nickel Technical Data PDF to the right for a comprehensive listing of physical, mechanical and electrical electroless nickel deposit properties.

May be used on all metals not affected by heating to F and above. Required hardness can be obtained per the following schedule:. Coated nonheat-treatable aluminum parts shall be heated for 1 to 1. Grade A — 0. ASTM B does not make this distinction. See 8.

ams 2404 vs astm b733

See 3. Hydrogen embrittlement relief 3. Unless otherwise specified, minimum thickness of the nickel coating shall be 0. The cognizant engineering organization may specify a phosphorus content range of the deposit.

When specified, the composition of the deposit shall be determined by a method acceptable to the cognizant engineering organization.

Electroless Nickel Plating

Grade A 0.Electroless nickel is the preferred engineering coating solution for applications requiring high levels of corrosion and wear resistance, deposit uniformity and hardness, lubricity, and solderability. Electroless nickel plating is an autocatalytic chemical process used to deposit a uniform layer of nickel-phosphorous alloy onto stainless steel, copper, aluminum, or brass workpiece, without the necessity of applying electrical current. Advanced Surface Technologies provides the highest quality electroless nickel plating services available for coating irregularly shaped parts, internal surfaces and cavities where assembly tolerances are critical, prototyping, and your other mission critical projects.

By eliminating the electrical current necessary to perform traditional electrolytic plating processes, electroless nickel plating allows AST to place nickel deposits in hard-to-plate recesses without burning or excessive build up on the outer edges of parts. This unparallelled level of conformity to the plated surface, uniform thickness, and atomic-level smoothness enhances cosmetic finishes, allows repair or salvage of complex machine components, high tech applications such as computer hard drive coating, and other custom solutions for demanding applications in a wide range of industries.

AST provides custom coating solutions per military spec Mil-C, and AMS — the most widely recognized and long-standing specifications pertaining to Electroless Nickel plating. Our experienced staff can also fabricate solutions meeting ASTM B, as well as other certifications, and are capable of meeting your company-specific specifications as well.

Advanced Surface Technologies is a national leader in the design, fabrication, and finishing of quality parts for the oil and gas, aerospace, solar, electronics, automotive, and other industries. Call us today for high quality, price competitive, responsive turnaround surface plating services, and allow us to exceed your expectations. Electroless Nickel Plating.Electroless Nickel is a high quality engineering coating for corrosion resistance, hardness, lubricity, solderability and wear resistance.

The advantage that Electroless Nickel has over almost all other plated coatings is the uniformity of the nickel deposit thickness. Without the high and low current density found in electrolytic plating processes, Electroless nickel can deposit into recesses without burning or having excessive thickness on the outer edges of a part. The coating conforms exactly to the surface finish of the part so cosmetic finishes will be enhanced by the Electroless Nickel deposit.

Cleaning and alloy perpetration are extremely important to the quality of the Electroless Nickel deposit and using chemistries that are specifically designed to clean each alloy allows AST to provide the quality expected, even on the most difficult of parts. There are many different types of Electroless Nickel coatings and processes available to meet a wide range of unique applications. Physical and mechanical properties vary considerably from one Electroless Nickel process to another depending on the phosphorus content, the formulation of the bath and both the pre-plate and post-plate treatments, yet all the Electroless Nickel coatings offer excellent deposit uniformity and superior corrosion protection.

Electroless Nickel plating is a chemical process that involves several simultaneous reactions in an aqueous solution, which occur without the use of external electrical power. The reaction is accomplished when hydrogen is released by a reducing agent normally sodium hypophosphiteand oxidized thus producing a negative charge on the surface of the part.

The charge causes a layer of nickel and phosphorus to form and this continues until the part is removed from the solution. Since the plating process requires no electrical current, the coating produced is a very uniform structure that can be applied over various metals and substrates. Our experienced staff can construct custom solutions for your distinct finishing needs. If its corrosion protection, solderability, hardness, cosmetics or lubricity we can help you achieve the final product.

Electroless nickel is the preferred engineering coating solution for applications requiring high levels of corrosion and wear resistance, deposit uniformity and hardness, lubricity, and solderability. Electroless nickel plating is an autocatalytic chemical process used to deposit a uniform layer of nickel-phosphorous alloy onto stainless steel, copper, aluminum, or brass workpiece, without the necessity of applying electrical current. Advanced Surface Technologies provides the highest quality electroless nickel plating services available for coating irregularly shaped parts, internal surfaces and cavities where assembly tolerances are critical, prototyping, and your other mission critical projects.

By eliminating the electrical current necessary to perform traditional electrolytic plating processes, electroless nickel plating allows AST to place nickel deposits in hard-to-plate recesses without burning or excessive build up on the outer edges of parts. This unparallelled level of conformity to the plated surface, uniform thickness, and atomic-level smoothness enhances cosmetic finishes, allows repair or salvage of complex machine components, high tech applications such as computer hard drive coating, and other custom solutions for demanding applications in a wide range of industries.

AST provides custom coating solutions per military spec Mil-C, and AMS — the most widely recognized and long-standing specifications pertaining to Electroless Nickel plating. Our experienced staff can also fabricate solutions meeting ASTM B, as well as other certifications, and are capable of meeting your company-specific specifications as well. Advanced Surface Technologies is a national leader in the design, fabrication, and finishing of quality parts for the oil and gas, aerospace, solar, electronics, automotive, and other industries.

Call us today for high quality, price competitive, responsive turnaround surface plating services, and allow us to exceed your expectations.

Electroless Nickel

Class 2 : Thermal treatment ar F C or above to harden the deposit. Class 3 : Thermal treatment ar F C to improve adhesion for nonheat treatable aluminum alloys and beryllium alloys. Class 4 : Thermal treatment at F C to improve adhesion for heat treatable aluminum alloys. Grade Grade A :. Classification Class 1 : Except for hydrogen embrittlement relief, no post plating thermal treatment.

Class 1 : Except for hydrogen embrittlement relief, no post plating thermal treatment. Grade A :. SCO : Minimum thickness. Production scheduling and production flexibility that minimize turnaround time A staff that understands the importance of quick response for our customers.There are four 4 different classes and three 3 different grades of electroless nickel plating used throughout the industry to meet different specifications. The class of an electroless nickel plating refers to the post-plating heat treatment process that is used; the grade of an electroless nickel plating refers to its thickness.

Heat treatment after electroless nickel plating provides evidence of proper adhesion and improves the crystalline structure of the amorphous deposit for greater hardness. Six heat-treat classes are available. Class 1 is for electroless nickel coatings that require no heat treatment.

Classes 2 through 5 exist at various levels between these two extremes. Electroless nickel coatings are graded A, B, or C. Grade A requires a minimum thickness of 0. Within the ASTM B electroless nickel plating specification, there is an additional category known as service condition. Service condition is based on the thickness, starting with SC0 for minimum service requirements and continuing up to SC4 for severe-service requirements.

ASTM B also specifies five 5 types of electroless nickel plating. Type refers to the coating's phosphorous content by weight. The chemical requirements for electroless nickel plating are very demanding and must be monitored closely. The chemical solution used for these coatings must be monitored for pH, temperature, nickel concentration, and hypophosphate concentration, among other factors. At ENS Technology, we test our electroless nickel plating solution at least once per hour to maintain optimum nickel and hypophosphate concentration.

Additionally, we mechanically agitate our plating solution to improve coating smoothness and prevent pitting, streaking, and other defects that can be caused by hydrogen bubbles on the surface of the workpiece. When applying electroless nickel plating to steel workpieces, clients must provide information on the hardness of the base material prior to treatment. For all material substrates with a hardness of Rockwell C40 or higher, stress-relief heat treatment is required to minimize hydrogen embrittlement of the base material.

ENS Technology provides full-service electroless nickel plating for parts and components of all shapes and sizes. We require the following information from our clients prior to starting any electroless nickel plating project:. Because each electroless nickel plating specification has slightly different requirements for post-treatment quality control, we use a variety of quality testing methods, from naked eye testing to micrometer measurements to x-ray fluorescence processes.

We have two advanced x-ray fluorescence systems in-house, which enables us to test platings during and after processing and allows us to provide immediate validation of coating thickness post-treatment. Test coupons provided for quality testing must be of the same material and stock as the workpiece s to ensure that the specification is met.

ams 2404 vs astm b733

We provide adhesion testing to ensure that your electroless nickel plating meets your required specifications. Adhesion test results are recorded by ENS Technology and kept on file at our facility for seven 7 years.

ENS Technology has the skills and experience to meet any electroless nickel plating specification. Request a quote on the coating s you need, or contact us to discuss your project. Contact Us Request a Quote. Electroless Nickel Plating.I am hoping that someone can direct me to a publication, website, etc. Any suggestions? You're treading on dangerous territory. While the title of the specifications might be comparable, the processes, requirements, test methodology, sampling plans, etc.

I've turned your inquiry over to my Sales Engineer who will send you want you're looking for - we use an internal cheat sheet BUT we know the limitations! Tread carefully. To minimize search efforts and to offer multiple viewpoints, we combined previously separate threads onto this page.

Please forgive any resultant repetition, failures of chronological order, or what may look like readers disrespecting previous responses -- those other responses may not have been on the page at the time I have a callout for AMS [affil. B Type 2 electroless nickel. I don't have the spec. Can someone help me? I need to know what the type 2 refers to - thickness, phos content, heat treatment?

AMS [affil. Straight nickel-boron is covered by AMS [affil. Most companies won't touch thallium bearing solutions - check out the health concerns associated From one websource: "Exposure to high levels of thallium can result in harmful health effects. Studies in people who ingested large amounts of thallium over a short time have reported vomiting, diarrhea, temporary hair loss, and effects on the nervous system, lungs, heart, liver, and kidneys.

It has caused death. A study on workers exposed on the job over several years reported nervous system effects, such as numbness of fingers and toes, from breathing thallium.

Hello Stephen! N-T-B has 2. The Nickel Boron is 2. There isn't a change bar next to these paragraphs, so I believe that the B revision says the same thing. What is the difference between AMS-C [affil.

They are both for Electroless nickel.


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