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ASTM HK

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25Cr-20Ni UNS J94224
#ASTM # #HK

Description

USA AISI ASTM HK and ASTM HK Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: ASTM HK
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy ASTM HK AISI USA
ASTM HF
UNS J92603
19Cr-9Ni
25Cr-12Ni
UNS J93503
ASTM HH
ASTM HI
UNS J94003
28Cr-15Ni
25Cr-20Ni

Chemical composition(mass fraction)(wt.%) of the ASTM HK

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％)
0.20-0.60 Max 2.00 Max 2.00 Max 0.04 Max 0.040 24.0-28.0 18.0-22.0 Max 0.50

Mechanical Properties of steel grade ASTM HK

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)
932 (≥) 646 (≥) 11 23 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade ASTM HK

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
23 - -     0.11 -  
752 464 - 44.3 414   -  
337 - 44 23.2   231 123

Heat Treatment of steel grade ASTM HK

Heat treated : 1381°C - 1948°C

Technological Curves of steel grade ASTM HK

Cross Reference Table (Equivalent Grade) of ASTM HK

Grade Standard Country Application
ASTM 1030 ASTM USA General use carbon steel bar
ASTM 1005 ASTM USA General use carbon steel bar
ASTM 1006 ASTM USA General use carbon steel bar
ASTM 1008 ASTM USA General use carbon steel bar
ASTM 1010 ASTM USA General use carbon steel bar
ASTM 1013 ASTM USA General use carbon steel bar
ASTM 1015 ASTM USA General use carbon steel bar
ASTM 1016 ASTM USA General use carbon steel bar
ASTM 1017 ASTM USA General use carbon steel bar
ASTM 1018 ASTM USA General use carbon steel bar
ASTM 1019 ASTM USA General use carbon steel bar
ASTM 1020 ASTM USA General use carbon steel bar
ASTM 1021 ASTM USA General use carbon steel bar
ASTM W1-A ASTM USA Carbon tool steel
ASTM A182 F55 ASTM USA Super Duplex
ASTM 431 ASTM USA Martensitic special steel
ASTM 440A ASTM USA Martensitic special steel
ASTM 440B ASTM USA Martensitic special steel
ASTM 440C ASTM USA Martensitic special steel
ASTM 501 ASTM USA Martensitic special steel
25Cr-20Ni UNS J94224
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Jiangyou Longhai Special Steel Co.,Ltd.

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