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US Standards In-Preparation
ANSI/AWS C2.20-9X, Specification for Thermal Spraying Zinc Anodes on Steel
Reinforced Concrete , Committee Draft #2, February 18, 1999. Ballot CD-205,
Approval to publish. Due 03/31/99.
This AWS standard is a specification for thermal spraying zinc anodes on steel
reinforced concrete. This standard is formatted as an industrial process instruction.
The scope includes: job description, safety, pass/fail job reference standards,
feedstock materials, equipment, a step-by-step process instruction for surface
preparation, thermal spraying, and quality control. There are three annexes: job
control record, operator qualification, and portable adhesion testing.
ANSI/AWS C2.21-9X, Specification for Thermal Spray Equipment Acceptance
Inspection , WD-4, May 15, 1998.
This standard specifies the thermal spray equipment acceptance requirements for plasma,
arc-wire, flame-powder, -wire, -rod, and -cord, and high-velocity-oxygen-fuel (HVOF)
equipment. Proof of suitability shall be provided by the equipment supplier. Example
inspection reports are provided in four non-mandatory appendices.
ANSI/AWS C2.22-9X , Guide for Metallographic Sample Preparation and Evaluation of
Thermal Spray Coatings . Note: No comparable ISO standard. Inactive
This guide presents the recommend practices for the metallographic techniques and
procedures for characterizing thermal spray coatings. Cutting, mounting, grinding, and
polishing materials and procedures are summarized. Coating analysis covers the
interpretation of the microstructure (percentage of porosity, oxides, and other phases) and
the correlation of that information with the overall properties of the thermal spray coating by
comparison with a standard using the Line-Intercept Method and the Grid Area Method.
SSPC/NACE/AWS Tri-Society on Corrosion Protection of Steel with Thermal Spray Coatings (TSTSC)
The SSPC/NACE/AWS Tri-Society on Corrosion Protection of Steel with Thermal Spray
Coatings was formed November 1996, at the SSPC C.1.2.B meeting, Dallas, TX.
Membership inducted from the AWS C2B, SSPC C2.1.B, and NACE T-6H-45 thermal
spray committees on corrosion protection of steel. Two Task Groups were formed:

TG-A, for developing a process specification for the protection of steel with thermal
spray coatings of aluminum and zinc and their alloys. The scope of TG-A is to develop
a process specification updating and merging the content AWS C2.18, SSPC CS
23.00, and MIL-STD-2138.

TG-B, for developing a guide for the inspection of thermal spray coatings on steel. The
TG-B inspection guide is a necessary complement to TG-A process specification.