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AISI 431

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UNS S42800 ASTM 431
#AISI # #431

Description

USA AISI AISI 431 Martensitic special steel and AISI 431 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Steel: AISI 431
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Steel AISI 431 AISI USA Martensitic special steel
0Cr18Ni9
00Cr19Ni10
0Cr19Ni10NbN
UNS S42800
1.0412
1.0412
1.0412
40X15H7
E2512
12Cr13

Chemical composition(mass fraction)(wt.%) of the AISI 431

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％)
Max 0.20 Max 1.00 Max 1.00 Max 0.04 Max 0.03 15.0-17.0 1.25-2.50

Mechanical Properties of steel grade AISI 431

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)
399 (≥) 846 (≥) 43 42 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade AISI 431

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
24 - -     0.21 -  
296 619 - 33.3 143   -  
594 - 31 13.2   341 331

Heat Treatment of steel grade AISI 431

Heat treated : 1662°C - 1442°C

Technological Curves of steel grade AISI 431

Cross Reference Table (Equivalent Grade) of AISI 431

Grade Standard Country Application
AISI 431 AISI USA Martensitic special steel
AISI 440A AISI China Martensitic special steel
AISI 440B AISI USA Martensitic special steel
AISI 440F AISI USA Martensitic special steel
AISI 440F Se AISI USA Martensitic special steel
AISI 501 AISI USA Martensitic special steel
AISI 501A AISI USA Martensitic special steel
AISI 501B AISI USA Martensitic special steel
AISI 502 AISI USA Martensitic special steel
AISI 503 AISI USA Martensitic special steel
AISI 504 AISI USA Martensitic special steel
AISI S13800 USA precipitation hardening
AISI S15500 AISI USA precipitation hardening
AISI 632 AISI USA precipitation hardening
AISI 630 AISI USA precipitation hardening
AISI 635 AISI USA precipitation hardening
AISI 631 AISI USA precipitation hardening
AISI 633 AISI USA precipitation hardening
AISI 633 AISI USA precipitation hardening
AISI 634 AISI USA precipitation hardening
UNS S42800 ASTM 431
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Jiangyou Longhai Special Steel Co.,Ltd.

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