ASTM A312/A312M-25 PDF
Name in English:
St ASTM A312/A312M-25
Name in Russian:
Ст ASTM A312/A312M-25
Original standard ASTM A312/A312M-25 in PDF full version. Additional info + preview on request
Full title and description
ASTM A312/A312M-25 — Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes. Specifies requirements for the chemical composition, heat treatment, mechanical properties, dimensional tolerances and mandatory tests (mechanical and nondestructive) for austenitic stainless steel pipe supplied in seamless, straight‑seam welded, or heavily cold‑worked welded form for high‑temperature and general corrosive service.
Abstract
This specification covers a wide range of austenitic stainless steel grades (including TP304, TP304L, TP304H, TP309, TP310, TP316 family, TP321, TP347, TP348 and their H/modified variants) and defines composition limits, tensile/yield/elongation requirements, heat‑treatment conditions, mandatory mechanical tests (tension, flattening), metallurgical checks (grain size, intergranular corrosion/weld decay where required), and pressure/acceptance testing (nondestructive electric test or hydrostatic test). Dimensions reference ASME/ANSI pipe tables and the standard supports both inch‑pound and SI units as separate systems.
General information
- Status: Active (current version).
- Publication date: May 19, 2025 (active / last updated).
- Publisher: ASTM International.
- ICS / categories: 23.040.10 (Iron and steel pipes).
- Edition / version: A312/A312M‑25.
- Number of pages: 14.
Scope
The standard applies to seamless, straight‑seam welded, and heavily cold‑worked welded austenitic stainless steel pipe intended for high‑temperature and general corrosive service. It includes special “H” (high‑temperature/creep) grades, permits ordering of additional supplementary test requirements, lists standardized pipe dimensions (per ASME B36.19), and treats SI and inch‑pound units as independent systems. The specification is intended for pipe used in pressure and non‑pressure applications where the defined chemical, mechanical and inspection criteria are appropriate.
Key topics and requirements
- Covered product forms: seamless, straight‑seam welded, and heavily cold‑worked welded austenitic stainless steel pipe.
- Applicable grades: TP304/304L/304H, TP309/309S/309Cb, TP310/310S/310Cb, TP316/316L/316Ti, TP317/317L, TP321/321H, TP347/347H, TP348, etc., including high‑temperature (H) modifications.
- Chemical composition limits for C, Mn, P, S, Si, Cr, Ni, Mo and alloying elements (Ti, Nb/Cb, Ta, N, V, Cu, etc.).
- Heat treatment/annealing and cooling requirements; material to be furnished in required heat‑treated condition.
- Mechanical property requirements — tensile strength, yield strength, and minimum elongation; differences for certain grades/thicknesses (e.g., TP321/TP321H exceptions).
- Mandatory tests: transverse or longitudinal tension tests, flattening tests, grain size determination, intergranular corrosion/weld‑decay testing where applicable.
- Non‑destructive and pressure testing options: nondestructive electric test or hydrostatic test for each pipe.
- Optional supplementary requirements available for increased testing/inspection per order.
- Dimensional and tolerancing references tied to ASME/ANSI pipe tables (ASME B36.19 for stainless steel pipe); separate inch‑pound and SI unit systems.
Typical use and users
Used by pipe manufacturers, materials engineers, piping designers, procurement/specification writers, fabricators and inspection agencies in industries such as power generation, petrochemical and chemical processing, oil & gas, refining, pulp & paper, food and pharmaceutical processing, and wherever corrosion‑resistant or high‑temperature austenitic stainless steel piping is required. Also referenced by code and standards committees and purchasing departments when specifying stainless pipe for pressure and high‑temperature systems.
Related standards
Commonly referenced or used alongside: ASME SA312 (ASME adoption/designation for use in ASME code work), ASME B36.19M (stainless steel pipe dimensions), ASTM A262 (intergranular corrosion tests), ASTM A370 (mechanical testing methods), ASTM A999/A999M (general requirements for alloy and stainless steel pipe), ASTM A1016/A1016M (tube and pipe requirements), ASTM E112 (grain size), ASTM E381 (macroetch), ASTM E309 (eddy‑current examination of tubular products), and applicable ASME B31 piping codes (e.g., B31.3) when designing/using pipe in pressure systems.
Keywords
austenitic stainless steel, seamless pipe, welded pipe, cold‑worked welded pipe, TP304, TP316, TP321, TP347, heat treatment, nondestructive test, hydrostatic test, ASME SA312, ASME B36.19, pipe dimensions, corrosion resistance
FAQ
Q: What is this standard?
A: ASTM A312/A312M‑25 is the ASTM International specification that defines requirements for seamless, straight‑seam welded, and heavily cold‑worked austenitic stainless steel pipes intended for high‑temperature and general corrosive service.
Q: What does it cover?
A: It covers allowable chemical compositions and alloying elements, heat‑treatment conditions, tensile/yield/elongation requirements, mandatory mechanical and metallurgical tests, nondestructive/pressure testing options, and dimensional references for the listed stainless steel grades and pipe production methods.
Q: Who typically uses it?
A: Manufacturers, material and piping engineers, fabricators, inspectors, and procurement/specification personnel in industries requiring corrosion‑resistant or high‑temperature piping, as well as code bodies and design organizations referencing stainless pipe specifications.
Q: Is it current or superseded?
A: The A312/A312M‑25 version is the current, active edition (published/updated in May 2025). Users should confirm the edition required by their project or code adoption before specifying or purchasing.
Q: Is it part of a series?
A: Yes — A312/A312M is part of ASTM’s broader suite of metallic pipe and tube specifications and is frequently paired with general requirements standards (e.g., ASTM A999/A999M) and related test practices; the specification also appears in parallel/adopted form as ASME SA312 for ASME code applications.
Q: What are the key keywords?
A: Austenitic stainless steel, seamless, welded, cold‑worked welded, TP304, TP316, high‑temperature service, nondestructive testing, hydrostatic test, ASME SA312, ASME B36.19.