ASTM B733-97 - 1.1.1997
 
1. Scope

1.1 This specification covers requirements for autocatalytic (electroless) nickel-phosphorus coatings applied from aqueous solutions to metallic products for engineering (functional) uses.

 
2. Referenced Documents

B374-24

Standard Terminology Relating to Electroplating

B380-97(2023)

Standard Test Method for Corrosion Testing of Decorative Electrodeposited Coatings by the Corrodkote Procedure

B487-24

Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section

B368-21

Standard Test Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test)

B499-09(2026)

Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals

B849-02(2023)

Standard Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement

B504-90(2023)

Standard Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method

B762-21

Standard Guide of Variables Sampling of Metallic and Inorganic Coatings

B537-22

Standard Practice for Rating of Electroplated Panels Subjected to Atmospheric Exposure

B567-98(2021)

Standard Test Method for Measurement of Coating Thickness by the Beta Backscatter Method

B678-25

Standard Test Method for Solderability of Metallic-Coated Products

B697-88(2021)

Standard Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings

B850-98(2022)

Standard Guide for Post-Coating Treatments of Steel for Reducing the Risk of Hydrogen Embrittlement

B851-04(2020)

Standard Specification for Automated Controlled Shot Peening of Metallic Articles Prior to Nickel, Autocatalytic Nickel, or Chromium Plating, or as Final Finish

D1193-24

Standard Specification for Reagent Water

D2670-25

Standard Test Method for Measuring Wear Properties of Fluid Lubricants (Falex Pin and Vee Block Method)

D2714-24

Standard Test Method for Calibration and Operation of the Falex Block-on-Ring Friction and Wear Testing Machine

D3951-18(2023)

Standard Practice for Commercial Packaging

D4060-25

Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser

E60-11(2022)e1

Standard Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry (Includes all amendments and changes 6/29/2022).

E140-12B(2019)e1

Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness (Includes all amendments and changes 5/7/2019).

E156-88

Method for Determination of Phosphorus in High-Phosphorus Brazing Alloys (Photometric Method) (Withdrawn 1993)

E352-23

Standard Test Methods for Chemical Analysis of Tool Steels and Other Similar Medium- and High-Alloy Steels

F519-23

Standard Test Method for Mechanical Hydrogen Embrittlement Evaluation of Plating/Coating Processes and Service Environments

G5-14(2021)

Standard Reference Test Method for Making Potentiodynamic Anodic Polarization Measurements

G31-21(2025)

Standard Guide for Laboratory Immersion Corrosion Testing of Metals

G59-23

Standard Test Method for Conducting Potentiodynamic Polarization Resistance Measurements

G85-19

Standard Practice for Modified Salt Spray (Fog) Testing

MIL-R-81841

Rotary Flap Peening of Metal Parts Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.

MIL-STD-105

Sampling Procedures and Tables for Inspection by Attribute

ISO 4527

Autocatalytic Nickel-Phosphorus Coatings--Specification and Test Methods Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.

B568-98(2021)

Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry

B571-23

Standard Practice for Qualitative Adhesion Testing of Metallic Coatings

B578-21

Standard Test Method for Microindentation Hardness of Electroplated Coatings

B602-21

Standard Guide for Attribute Sampling of Metallic and Inorganic Coatings

B667-97(2024)

Standard Practice for Construction and Use of a Probe for Measuring Electrical Contact Resistance