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USA UNS SAE AMS 5635F (2006) , SAE J 405 (1998) , 303 Pb Specialsteel Steel, Corrosion-Resistant, Bars, Wire, and Forgings 18Cr - 9Ni - 0.21Pb (303Pb) Free-Machining, Solution Heat Treated and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 303 Pb
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 303 Pb Austenite UNS USA Steel, Corrosion-Resistant, Bars, Wire, and Forgings 18Cr - 9Ni - 0.21Pb (303Pb) Free-Machining, Solution Heat Treated

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

C Si Mn P S Cr Ni Mo Pb
≤0.15 ≤1.00 ≤2.00 ≤0.04 0.12 -0.25 17.0 -19.0 8.00 -10.0 ≤0.60 0.12 -0.30

Mechanical Properties of steel grade 303 Pb

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)
884 (≥) 526 (≥) 34 31 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade 303 Pb

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
31 - -     0.43 -  
588 333 - 33.3 413   -  
642 - 33 34.2   341 434

Heat Treatment of steel grade 303 Pb

Heat treated : 1165°C - 1837°C

Technological Curves of steel grade 303 Pb

Relevant standard of 303 Pb

SAE AMS 5635F (2006) Steel, Corrosion-Resistant, Bars, Wire, and Forgings 18Cr - 9Ni - 0.21Pb (303Pb) Free-Machining, Solution Heat Treated SAE-AMS-5635F--(2006)-.pdf
SAE J 405 (1998) Chemical compositions of SAE wrought stainless steels SAE-J-405--(1998)-.pdf

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