Available 24/7 at contact@steel-grades.com

Description

UK B.S. BS 5S 99 : 1994, S99 Specialsteel 2.5 % nickel-chromiummolybdenum (high carbon) steel billets, bars, forgings and parts (1230-1420 MPa: limiting ruling section 150 mm) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: S99
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel S99 Martensite B.S. UK 2.5 % nickel-chromiummolybdenum (high carbon) steel billets, bars, forgings and parts (1230-1420 MPa: limiting ruling section 150 mm)

Chemical composition(mass fraction)(wt.%) of the S99

C Si Mn P S Cr Mo Ni Al Fe
0.36 -0.44 0.10 -0.35 0.45 -0.70 ≤0.025 ≤0.015 0.5 -0.8 0.45 -0.65 2.3 -2.8 0.015 -0.050 ≤Base

Mechanical Properties of steel grade S99

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)
148 (≥) 977 (≥) 34 44 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade S99

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
24 - -     0.12 -  
985 591 - 33.3 334   -  
419 - 11 24.2   122 422

Heat Treatment of steel grade S99

Heat treated : 1649°C - 1546°C

Technological Curves of steel grade S99

Cross Reference Table (Equivalent Grade) of S99

Relevant standard of S99

BS 5S 99 : 1994 2.5 % nickel-chromiummolybdenum (high carbon) steel billets, bars, forgings and parts (1230-1420 MPa: limiting ruling section 150 mm) BS-5S-99-:-1994.pdf

Available Suppliers

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...

REQUEST FOR QUOTATION
  • Do you supply this S99?
  • List your company on S&G now? Join
  • Non-paying users only
Top