ASTM RR-G01-1002 1983 PDF

Full title and description

St ASTM RR‑G01‑1002 (1983) — Research Report for ASTM G28: Standard Test Methods for Detecting Susceptibility to Intergranular Corrosion in Wrought, Nickel‑Rich, Chromium‑Bearing Alloys. This research report documents an interlaboratory study conducted to establish a precision statement and supporting data for the G28 test methods.

Abstract

This research report (RR‑G01‑1002) summarizes an interlaboratory study carried out in 1983 by six participating laboratories that tested three sample sets to establish precision and repeatability for the G28 procedures used to detect susceptibility to intergranular corrosion in wrought nickel‑rich, chromium‑bearing alloys. The work supports Method A (ferric sulfate–sulfuric acid) and Method B (mixed acid–oxidizing salt) described in the G28 standard.

General information

• Status: Research report (RR‑G01‑1002) associated with ASTM G28; research report approved Oct 27, 1983. The underlying G28 test methods remain an active ASTM standard (current G28 revision published and maintained by ASTM).
• Publication date: 1983 (Research Report approved Oct 27, 1983).
• Publisher: ASTM International (ASTM).
• ICS / categories: Corrosion and alloys — ICS 77.120.40 (nickel, chromium and their alloys).
• Edition / version: RR‑G01‑1002 (1983) — research report supporting ASTM G28; G28 has been revised since and is maintained as the active test method (see current G28 revision history).
• Number of pages: Research report page count not specified on the public product listing; the associated ASTM G28 standard document is a short test method (typically 7 pages in recent published revisions).

Scope

The research report documents the interlaboratory evaluation used to develop the precision statement for ASTM G28. The G28 test methods covered by the report include: Method A — the boiling ferric sulfate / 50% sulfuric acid test, and Method B — a boiling mixed acid/oxidizing salt test (23% sulfuric + 1.2% hydrochloric + 1% ferric chloride + 1% cupric chloride). The methods are intended to detect susceptibility to intergranular corrosion in wrought, nickel‑rich, chromium‑bearing alloys and to evaluate the effects of processing or heat treatment; they are not intended for cast products.

Key topics and requirements

• Interlaboratory precision study supporting ASTM G28 test methods (RR objective: establish precision and repeatability for G28).
• Method A — Ferric sulfate / sulfuric acid boiling test procedure and acceptance/interpretation criteria.
• Method B — Mixed acid / oxidizing salt boiling test procedure for detecting step‑function corrosion behavior associated with grain‑boundary precipitation.
• Applicability to wrought nickel‑rich, chromium‑bearing alloys and weldments; limitations noted for cast products and certain service environments.
• Safety and handling considerations for strong acids and oxidizing reagents used by both methods (user responsibility for appropriate lab safety controls).

Typical use and users

Used by corrosion laboratories, metallurgical testing facilities, alloy producers, quality assurance teams, failure‑analysis labs, and engineering groups concerned with material selection for corrosive or high‑temperature service. Typical applications include incoming material qualification, evaluation of heat treatment effects, weld qualification, and investigations of suspected intergranular attack.

Related standards

ASTM G28 (the test methods the report supports) and other ASTM corrosion standards and practices referenced by G28 (for example, nitric acid intergranular corrosion practices such as A262 Practice C where relevant to specific environments). The report was developed under ASTM Committee G01 subcommittee G01.05.

Keywords

intergranular corrosion, G28, ferric sulfate test, mixed acid oxidizing salt test, nickel alloys, chromium‑bearing alloys, interlaboratory study, precision statement, ASTM RR, corrosion testing.

FAQ

Q: What is this standard?

A: This entry is a research report (RR‑G01‑1002, 1983) that documents an interlaboratory study supporting ASTM G28 — the Standard Test Methods for Detecting Susceptibility to Intergranular Corrosion in Wrought, Nickel‑Rich, Chromium‑Bearing Alloys.

Q: What does it cover?

A: The report covers the experimental round‑robin data, test instructions, and statistical analysis used to establish the precision statement for G28’s two test methods (Method A: ferric sulfate–sulfuric acid; Method B: mixed acid–oxidizing salt). The underlying G28 standard describes test procedures, specimen preparation, test conditions, evaluation criteria, and limitations.

Q: Who typically uses it?

A: Corrosion testing laboratories, metallurgists, materials engineers, QA/QC groups, alloy manufacturers, and forensic labs use G28 and its supporting research report when assessing susceptibility of nickel‑rich, chromium‑bearing wrought alloys to intergranular corrosion.

Q: Is it current or superseded?

A: The research report RR‑G01‑1002 is a historical (1983) research document that supported G28 at the time of approval (research report approved Oct 27, 1983). The G28 test methods themselves are maintained and have been revised since 1983; the G28 standard remains an active ASTM test method and has later revisions (see the current G28 document history maintained by ASTM). The report remains the archival interlaboratory record for the precision statement generated in 1983.

Q: Is it part of a series?

A: Yes — it is one of ASTM’s committee research reports (RR series) produced by Committee G01 (Corrosion of Metals). Its stock number is RR‑G01‑1002 and it specifically supports Standard G28.

Q: What are the key keywords?

A: Intergranular corrosion, nickel alloys, chromium‑bearing alloys, ferric sulfate test, mixed acid test, ASTM G28, research report, precision statement, interlaboratory study.

Note on data availability: Public listing for RR‑G01‑1002 (ASTM product listing) provides approval date, descriptive summary, and stock number but does not specify the research report’s exact page count on the public page; the associated ASTM G28 standard document pages are listed in ASTM product records (G28 is a short test method in recent revisions). For archival/reproduction copies or precise report length, consult ASTM Customer Service or the ASTM Digital Library.