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Description

USA YB A 314 (2008) , A 473 (2009) , A 581/A 581M (2009) , A 582/A 582M (2012) , A 895 (2009) , A 959 (2011) , 303 Specialsteel Stainless Steel Billets and Bars for Forging and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 303
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 303 Austenite YB USA Stainless Steel Billets and Bars for Forging

Chemical composition(mass fraction)(wt.%) of the 303

C Si Mn P S Cr Ni Mo
≤0.15 ≤1.00 ≤2.00 ≤0.2 0.15 - ≥ 17.0 -19.0 8.00 -10.0 ≤0.60

Mechanical Properties of steel grade 303

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)
646 (≥) 916 (≥) 34 41 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade 303

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 - -     0.42 -  
558 633 - 14.3 221   -  
845 - 31 44.2   213 323

Heat Treatment of steel grade 303

Heat treated : 1687°C - 1262°C

Technological Curves of steel grade 303

Cross Reference Table (Equivalent Grade) of 303

Relevant standard of 303

A 314 (2008) Stainless Steel Billets and Bars for Forging A-314--(2008)--.pdf
A 473 (2009) Stainless Steel Forgings A-473--(2009)--.pdf
A 581/A 581M (2009) Free-Machining Stainless Steel Wire and Wire Rods A-581-A-581M--(2009)-.pdf
A 582/A 582M (2012) Free-Machining Stainless Steel Bars A-582-A-582M--(2012)--.pdf
A 895 (2009) Free-Machining Stainless Steel Plate, Sheet, and Strip A-895--(2009)-.pdf
A 959 (2011) Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels A-959--(2011)-.pdf

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