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Description

660 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 660
Category Type Steel Grade Standard Country Application
Steel GradesHigh Alloy 660
S35000
634
S35500
635
650
651
S63198
652
S63199
653

Chemical composition(mass fraction)(wt.%) of the 660

C
Si
Mn
P
S
Cr Ni
0.05 0.60 1.45     14.75 25.20
Mo Al Cu Nb Ti V Ce
1.30 0.22     2.15 0.28  
N Co Pb B Other Approximate rnumbe  
      0.004 Fe... A-286  
             

Mechanical Properties of steel grade 660

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)
271 (≥) 679 (≥) 23 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade 660

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
41 - -     0.21 -  
173 193 - 11.3 334   -  
653 - 41 23.2   441 344

Heat Treatment of steel grade 660

Heat treated : 1946°C - 1687°C

Technological Curves of steel grade 660

Cross Reference Table (Equivalent Grade) of 660

Grade Standard Country Application
AISI 660 AISI USA precipitation hardening
SUH660 JIS Japan austenitic special steel
Austenitic 660 China CNS standard heat resistant steel bars(CNS 9608-1998)
STR660 KS standard austenitic heat resistant steel
42 2660 The Czech republic Structural steel
8660 Australia Structural steel
8660H Australia Structural steel
XK8660S Australia Structural steel
K8660HS Australia Structural steel
Austenitic 660 China China Taiwan Heat-Resistant Steel
ASTM A638 Grade 660B 660D Alloy A286 ASTM USA A precipitation hardening stainless type steel suitable for applications at high temperature.

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