ASTM B625-21 PDF
Name in English:
St ASTM B625-21
Name in Russian:
Ст ASTM B625-21
Original standard ASTM B625-21 in PDF full version. Additional info + preview on request
Full title and description
ASTM B625-21 — Standard Specification for Ni-Fe-Cr-Mo-Cu-N Low‑Carbon Alloy, Ni‑Fe‑Cr‑Si Alloy, Cr‑Ni‑Fe‑N Low‑Carbon Alloy, Fe‑Ni‑Cr‑Mo‑Cu‑N Alloy, and Ni‑Fe‑Cr‑Mo‑N Alloy Plate, Sheet, and Strip. This specification defines required chemical compositions, mechanical properties, product forms (plate, sheet, strip) and acceptance criteria for the listed nickel‑iron‑chromium alloys supplied in the annealed temper.
Abstract
ASTM B625-21 establishes requirements for several high‑alloy nickel/iron/chromium materials (UNS N08925, N08031, N08932, N08926, N08354 and R20033) in plate, sheet and strip form in the annealed condition — covering chemical composition limits and mechanical requirements such as tensile strength, yield strength, elongation and hardness, together with inspection and certification practices.
General information
- Status: Active standard.
- Publication date: November 30, 2021.
- Publisher: ASTM International.
- ICS / categories: 77.120 (Non‑ferrous metals — products of non‑ferrous metals); relevant to ICS entries for stainless and high‑alloy metallic products.
- Edition / version: B625-21 (2021 edition).
- Number of pages: 3 pages (concise specification document).
Scope
This specification covers nickel‑iron‑chromium and related high‑alloy plate, sheet and strip in the annealed temper for the specified UNS grades. It sets chemical composition ranges (C, Mn, P, S, Si, Ni, Cr, Mo, Cu, N and Fe) and mechanical property requirements (tensile, yield, elongation, Rockwell hardness) and addresses units, marking and user safety considerations. The document clarifies that some grades formerly covered here may be handled under other ASTM specifications when iron becomes the predominant element.
Key topics and requirements
- Alloy coverage: UNS N08925, N08031, N08932, N08926, N08354, and R20033.
- Chemical composition limits for alloying and impurity elements (Ni, Cr, Mo, Cu, N, C, Si, Mn, P, S, Fe balance).
- Mechanical property requirements in the annealed temper — tensile strength, yield strength, percent elongation and Rockwell hardness limits.
- Product forms: plate, sheet and strip; specification applies to annealed material only.
- Inspection, testing and certification requirements (manufacturer’s test report, acceptance criteria for chemical and mechanical tests).
- Notes on interchangeability and where certain grades may be covered by other ASTM/ASME specifications (cross‑references and material designation practice).
Typical use and users
Used by materials engineers, fabricators, procurement/specification writers, quality and inspection personnel, and manufacturers of pressure/chemical process equipment. Typical applications include corrosion‑resistant components in chemical processing, seawater/desalination, pulp and paper, powerplant cooling and condenser systems, and other environments demanding resistance to pitting, crevice and general corrosion where these high‑alloy nickel‑chromium materials are chosen.
Related standards
ASTM B625-21 is used alongside related ASTM and ASME product standards for nickel and nickel‑alloy products. Certain grades that are iron‑dominant or classified as stainless steels may be covered under ASTM A240/A480 (and corresponding ASME SA/SA*) product specifications; ASTM B625 material is commonly referenced alongside ASME SB625 for code or pressure‑part procurement. Users should check cross‑references for a specific UNS grade to confirm the controlling specification for a given application.
Keywords
ASTM B625, B625-21, nickel alloy plate, N08925, N08031, N08932, N08926, N08354, R20033, annealed plate, sheet, strip, chemical composition, tensile, yield, Rockwell hardness, ASME SB625, UNS alloys.
FAQ
Q: What is this standard?
A: ASTM B625-21 is a concise ASTM International specification that prescribes chemical and mechanical requirements for selected nickel‑iron‑chromium and related high‑alloy materials supplied as plate, sheet and strip in the annealed temper.
Q: What does it cover?
A: It covers composition limits, mechanical property requirements (tensile, yield, elongation, hardness), applicable product forms (plate, sheet, strip) and acceptance/testing requirements for the listed UNS alloy grades in the annealed condition.
Q: Who typically uses it?
A: Material specifiers, procurement teams, manufacturers and fabricators of equipment for corrosive and marine environments, and quality/inspection staff who need to verify composition and mechanical conformity of nickel‑chromium‑based plate, sheet and strip.
Q: Is it current or superseded?
A: The B625-21 edition (published November 30, 2021) is listed as an active standard; users should confirm with ASTM or their standards custodian for any amendments or revisions after 2021 before relying on it for the latest procurement or compliance decisions.
Q: Is it part of a series?
A: B625 is part of the ASTM nonferrous/metals product family covering nickel and nickel‑alloy product specifications. Specific UNS grades may also be covered or cross‑referenced by other ASTM/ASME product specifications (for example, certain grades may be covered by ASTM A240/A480 and corresponding ASME designations such as SB625 depending on the product form and application).
Q: What are the key keywords?
A: nickel alloy, plate, sheet, strip, annealed, UNS N08925, N08031, N08932, N08926, N08354, R20033, chemical composition, tensile, yield, Rockwell hardness, ASTM B625, ASME SB625.