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S.125

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S.124 S.126
#S-125

Description

UK B.S. BS S 125, S.125 Specialsteel Specification for aircraft material. 23/14 chromium-nickel heat-resisting steel (titanium stabilized) (35 tonf/sq in: limiting ruling section 6 in) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: S.125
Category Class Grade Standard Country Application
Steel GradesSpecialsteel S.125 B.S. UK Specification for aircraft material. 23/14 chromium-nickel heat-resisting steel (titanium stabilized) (35 tonf/sq in: limiting ruling section 6 in)

Chemical composition(mass fraction)(wt.%) of the S.125

C Si Mn P S Cr Ni Mo Ti
≤0.15 0.20 -1.00 0.50 -2.00 ≤0.035 ≤0.025 22.00 -25.00 13.00 -16.00 ≤ ≥ ≤4×C

Mechanical Properties of steel grade S.125

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)
321 (≥) 748 (≥) 12 41 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade S.125

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
21 - -     0.14 -  
612 944 - 44.3 331   -  
455 - 11 21.2   312 214

Heat Treatment of steel grade S.125

Heat treated : 1121°C - 1743°C

Technological Curves of steel grade S.125

Relevant standard of S.125

BS S 125 Specification for aircraft material. 23/14 chromium-nickel heat-resisting steel (titanium stabilized) (35 tonf/sq in: limiting ruling section 6 in) BS-S-125.pdf
S.124 S.126
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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