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Description

USA AISI S44020 Specialsteel Martensitic Chromium Free Machining Stainless Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: S44020
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel S44020 Martensite AISI USA Martensitic Chromium Free Machining Stainless Steel

Chemical composition(mass fraction)(wt.%) of the S44020

C Mn Si P S Cr Ni Mo N
0.95 -1.20 ≤1.25 ≤1.00 ≤0.04 0.10 -0.35 16.00 -18.00 ≤0.75 ≤ ≥ ≤0.08

Mechanical Properties of steel grade S44020

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)
759 (≥) 557 (≥) 44 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade S44020

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
11 - -     0.12 -  
162 411 - 22.3 331   -  
974 - 23 22.2   242 422

Heat Treatment of steel grade S44020

Heat treated : 1611°C - 1322°C

Technological Curves of steel grade S44020

Cross Reference Table (Equivalent Grade) of S44020

Grade Standard Country Application
Type440F
S44020
S44020
UNS S44020
S44020

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