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2S.111

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443S65 2S.129
#2S-111

Description

UK B.S. BS 2S 111, 2S.111 Specialsteel Specification for aircraft material. Nickel-chromium-tungsten valve steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 2S.111
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 2S.111 B.S. UK Specification for aircraft material. Nickel-chromium-tungsten valve steel

Chemical composition(mass fraction)(wt.%) of the 2S.111

C Si Mn P S Cr Ni Mo W
0.37 -0.47 1.00 -2.00 0.50 -1.00 ≤0.035 ≤0.025 13.00 -15.00 13.00 -15.00 0.40 -0.60 2.20 -3.00

Mechanical Properties of steel grade 2S.111

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)
269 (≥) 928 (≥) 32 21 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade 2S.111

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
44 - -     0.34 -  
125 589 - 22.3 214   -  
957 - 12 22.2   244 434

Heat Treatment of steel grade 2S.111

Heat treated : 1157°C - 1312°C

Technological Curves of steel grade 2S.111

Relevant standard of 2S.111

BS 2S 111 Specification for aircraft material. Nickel-chromium-tungsten valve steel BS-2S-111.pdf
443S65 2S.129
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