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20MB5
Standard NF A 35-551-1986
Standard NF A 35-557-1983
Standard NF A 35-556-1984 Steel for threaded fasteners for structural and engineering purposes
Standard NF EN 10083-3-2006 Tempered alloy structural steel
Standard NF A 35-566-1983


Chemical Composition(%)


Standard Material Designation Chemical Composition (%)
NF A 35-551-1986 20MB5
 
Min
Max
NF A 35-557-1983 20MB5
 
Min
Max
NF EN 10083-3-2006
Tempered alloy structural steel
20MnB5
(1.5530)
(20MB5)
 
Min
Max
NF A 35-556-1984
Steel for threaded fasteners for structural and engineering purposes
20MB5
 
Min
Max
NF A 35-566-1983 20MB5
 
Min
Max
For Reference Only