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A 541 Class 8A

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A 541 Class 8 A 854 Grade 180
#418

Description

USA SAE A 541/A 541M (2010), A 541 Class 8A 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 8A
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 541 Class 8A 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 8A

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 8A

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)
919 (≥) 741 (≥) 22 32 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade A 541 Class 8A

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
32 - -     0.34 -  
577 914 - 22.3 244   -  
945 - 23 12.2   232 114

Heat Treatment of steel grade A 541 Class 8A

Heat treated : 1826°C - 1416°C

Technological Curves of steel grade A 541 Class 8A

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

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 8A

A 541/A 541M (2010) Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components A-541-A-541M-(2010).pdf
A 541 Class 8 A 854 Grade 180
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