ASTM B443
Alloy 625 flat-product requirements, with Grade 1 annealed and Grade 2 solution-annealed tensile properties shown separately.
Nickel-Chromium-Molybdenum Alloy Plate, Sheet & Strip
Edition: B443-00 (2005)
1 linked material grade
Material requirements.
Clearly organized.
Alloy 625 flat-product requirements, with Grade 1 annealed and Grade 2 solution-annealed tensile properties shown separately.
Material forms, conditions and dimensional ranges are shown alongside the relevant property values.
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Composition & Mechanical Properties
| Grade / UNS | Ni % | Cr % | Mo % | Fe % | Nb + Ta % | C % | Mn % | Si % | P % | S % | Al % | Ti % | Co % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy 625 N06625 | ≥58.0 | 20.0–23.0 | 8.0–10.0 | ≤5.0 | 3.15–4.15 | ≤0.10 | ≤0.50 | ≤0.50 | ≤0.015 | ≤0.015 | ≤0.40 | ≤0.40 | ≤1.0 if determined |
Composition values are mass percentages. ≤ indicates a maximum; ≥ indicates a minimum.
| Grade / UNS | Product form / condition | Tensile min (MPa) | Yield min (MPa) | Elongation min (%) | Hardness |
|---|---|---|---|---|---|
| Alloy 625 N06625 | Grade 1 · Cold-rolled sheet / strip · Annealed | 827 | 414 | 30 | — |
| Alloy 625 N06625 | Grade 1 · Hot-rolled sheet / plate ≤2.75 in. (70 mm) · Annealed | 758 | 379 | 30 | — |
| Alloy 625 N06625 | Grade 1 · Cold-rolled plate ≤0.375 in. (9.5 mm) · Annealed | 758 | 379 | 30 | — |
| Alloy 625 N06625 | Grade 2 · Plate / sheet / strip · Solution annealed | 690 | 276 | 30 | — |
- Grade 1 is annealed at 1600°F (871°C) minimum; Grade 2 is solution annealed at 2000°F (1093°C) minimum.
- Yield requirements exclude material below 0.020 in. (0.508 mm), and elongation excludes material below 0.010 in. (0.254 mm).
- Nickel is determined by difference. Cobalt is limited when determined.
From material form
to gasket component.
Review the listed material grade and its delivery condition when selecting winding strip or ring stock for a specified gasket design.
Material standards and gasket standards serve different purposes.
ASTM B443 addresses the material forms identified on this page. Finished metallic gasket requirements are addressed separately by the applicable gasket standard.
Explore ASME B16.20 →Common questions
Material coverage and property conditions for this standard.
Which website material grades are included?
Alloy 625.
What edition is used for these tables?
The tables use ASTM B443-00 (2005).
Are material properties independent of condition?
No. The mechanical table identifies the applicable product form, condition and dimensional range for each listed row.