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UK B.S. BS EN 10088-1, BS EN 10088-2, BS EN 10088-3, BS EN 10088-4, BS EN 10088-5, BS EN 10151, BS EN 10250-4, 1.4021 Specialsteel Open die steel forgings for general engineering purposes - Part 4: Stainless steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 1.4021
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 1.4021 Martensite B.S. UK Open die steel forgings for general engineering purposes - Part 4: Stainless steels

Chemical composition(mass fraction)(wt.%) of the 1.4021

C Si Mn P S Cr Ni Mo
0.16 -0.25 ≤1.00 ≤1.50 ≤0.04 ≤0.015 12.00 -14.00 ≤ ≥ ≤ ≥

Mechanical Properties of steel grade 1.4021

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)
763 (≥) 977 (≥) 21 14 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade 1.4021

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
13 - -     0.32 -  
619 862 - 33.3 234   -  
494 - 44 22.2   412 111

Heat Treatment of steel grade 1.4021

Heat treated : 1664°C - 1429°C

Technological Curves of steel grade 1.4021

Cross Reference Table (Equivalent Grade) of 1.4021

Relevant standard of 1.4021

BS EN 10088-1 Stainless steels - Part 1: List of stainless steels BS-EN-10088-1.pdf
BS EN 10088-2 Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes BS-EN-10088-2.pdf
BS EN 10088-3 Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes BS-EN-10088-3.pdf
BS EN 10088-4 Stainless steels - Part 4: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes BS-EN-10088-4.pdf
BS EN 10088-5 Stainless steels - Part 5: Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes BS-EN-10088-5.pdf
BS EN 10151 Stainless steel strip for springs - Technical delivery conditions BS-EN-10151.pdf
BS EN 10250-4 Open die steel forgings for general engineering purposes - Part 4: Stainless steels BS-EN-10250-4.pdf

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