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Grade R780-2

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China 鞍钢Q/ASB GradeR780-2 地质钻探用无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GradeR780-2 / Grade R780-2
Category Grade Standard Region/Area Standard Content
Metals Grade R780-2 Q/ASB 98 China 地质钻探用无缝钢管

Chemical composition(mass fraction)(wt.%) of the Grade R780-2

Element Min Max Similar
Cu - 0.2000 -
Ni - 0.2000 -
Cr - 0.2000 -
V 0.0500 0.2000 -
Ti - 0.0300 -
S - 0.0150 -
P - 0.0250 -
Mn 1.5000 1.7000 -
Si 0.2000 0.4000 -
C 0.3300 0.4000 -

Mechanical Properties of steel grade Grade R780-2

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)
143 (≥) 288 (≥) 33 12 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade Grade R780-2

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
22 - -     0.12 -  
721 217 - 44.3 244   -  
452 - 32 42.2   431 443

Heat Treatment of steel grade Grade R780-2

Heat treated : 1223°C - 1945°C

Technological Curves of steel grade Grade R780-2

Cross Reference Table (Equivalent Grade) of Grade R780-2

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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