USA SAE B 344 (2011), B 344 Ni80-Cr20 Specialsteel Drawn or Rolled Nickel-Chromium and Nickel-Chromium-Iron Alloys for Electrical Heating Elements and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | B 344 Ni80-Cr20 | Precipitation-Hardening | SAE | USA | Drawn or Rolled Nickel-Chromium and Nickel-Chromium-Iron Alloys for Electrical Heating Elements |
C | Si | Mn | Cr | Ni | Mo | Co | W | Al | Cu | Ti | Fe | Nb |
---|---|---|---|---|---|---|---|---|---|---|---|---|
≤0.12 | ≤0.30 | ≤0.80 | ≤19.00 | ≤14.00 | ≤ ≥ | ≤ ≥ | ≤ ≥ | ≤ ≥ | ≤ ≥ | ≤ ≥ | ≤remaining | ≤1.60 |
Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
---|---|---|---|---|---|---|
413 (≥) | 339 (≥) | 11 | 41 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 424 |
Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson’s coefficient, ν |
---|---|---|---|---|---|---|---|
34 | - | - | 0.22 | - | |||
496 | 535 | - | 23.3 | 121 | - | ||
317 | - | 32 | 31.2 | 242 | 341 |
Heat treated : 1385°C - 1125°C
Grade | Standard | Country | Application |
---|---|---|---|
R-20 | |||
25Cr-20Ni | |||
25Cr-20Ni+ | |||
29Cr-20Ni | |||
25Cr-20Ni | |||
25Cr-20Ni | |||
25Cr-20Ni | |||
25Cr-20Ni | |||
25Cr-20Ni | |||
29Cr-20Ni | |||
29Cr-20Ni | |||
29Cr-20Ni |
B 344 (2011) | Drawn or Rolled Nickel-Chromium and Nickel-Chromium-Iron Alloys for Electrical Heating Elements | B-344-(2011).pdf |
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