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B 424 N08221

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B 423 N08221 B 424 N08825
#B-4

Description

USA SAE B 424 (2011), B 424 N08221 Specialsteel Standard Specification for Ni-Fe-Cr-Mo-Cu Alloy (UNS N08825, UNS N08221, and UNS N06845) Plate, Sheet, and Strip UNS N06845) Plate, Sheet, and Strip1 and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: B 424 N08221
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel B 424 N08221 Precipitation-Hardening SAE USA Standard Specification for Ni-Fe-Cr-Mo-Cu Alloy (UNS N08825, UNS N08221, and UNS N06845) Plate, Sheet, and Strip UNS N06845) Plate, Sheet, and Strip1

Chemical composition(mass fraction)(wt.%) of the B 424 N08221

C Si Mn P S Ni Cr Al Cu Ti Fe Mo Co
≤0.01 ≤0.05 ≤1.50 ≤0.04 ≤0.01 ≤remaining 0.50 -1.50 0.10 -0.50 ≤0.50 ≤ ≥ 1.00 -6.00 26.00 -30.00 ≤2.50

Mechanical Properties of steel grade B 424 N08221

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)
487 (≥) 967 (≥) 14 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade B 424 N08221

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 - -     0.34 -  
115 851 - 43.3 212   -  
675 - 23 12.2   431 343

Heat Treatment of steel grade B 424 N08221

Heat treated : 1845°C - 1993°C

Technological Curves of steel grade B 424 N08221

Cross Reference Table (Equivalent Grade) of B 424 N08221

Grade Standard Country Application
B-4
ASTM B-4
ASTM B-4
ASTM B-4

Relevant standard of B 424 N08221

B 424 (2011) Standard Specification for Ni-Fe-Cr-Mo-Cu Alloy (UNS N08825, UNS N08221, and UNS N06845) Plate, Sheet, and Strip UNS N06845) Plate, Sheet, and Strip1 B-424-(2011).pdf
B 423 N08221 B 424 N08825
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