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A 541 Class 8

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A 534 18NiCrMo14-6 A 541 Class 8A
#418

Description

USA SAE A 541/A 541M (2010), A 541 Class 8 Specialsteel Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: A 541 Class 8
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 541 Class 8 Precipitation-Hardening SAE USA Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components

Chemical composition(mass fraction)(wt.%) of the A 541 Class 8

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo W
≤0.20 ≤0.50 ≤1.00 ≤ ≥ ≤ ≥ ≤ ≥ ≤12.50 ≤ ≥ ≤ ≥ ≤ ≥ ≤remaining ≤ ≥ ≤ ≥ ≤3.00

Mechanical Properties of steel grade A 541 Class 8

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)
284 (≥) 935 (≥) 41 31 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade A 541 Class 8

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
44 - -     0.42 -  
791 585 - 22.3 231   -  
818 - 43 11.2   311 434

Heat Treatment of steel grade A 541 Class 8

Heat treated : 1446°C - 1985°C

Technological Curves of steel grade A 541 Class 8

Cross Reference Table (Equivalent Grade) of A 541 Class 8

Grade Standard Country Application
1.4418
1.4418
S41800
S41800
418
S41800
AMS 6418F
UNS W50418
UNS W21418
SCM418
SCM418H
SCM418TK
418(S41800)
Type418(GreekAscollOy)
S41800
UNS S41800
1.4418
1.4418
GH4180
GH4180

Relevant standard of A 541 Class 8

A 541/A 541M (2010) Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components A-541-A-541M-(2010).pdf
A 534 18NiCrMo14-6 A 541 Class 8A
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