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XC 55 H 1

France AFNOR NF XC55H1 Quenched and tempered steels - Part 1: technical delivery conditions for specials steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: XC55H1 / XC 55 H 1
Category Grade Standard Region/Area Standard Content
Metals XC 55 H 1 NF A35-552-1 France Quenched and tempered steels - Part 1: technical delivery conditions for specials steels

Chemical composition(mass fraction)(wt.%) of the XC 55 H 1

Element Min Max Similar
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.4000 -
Mo - 0.1000 -
Mn 0.6000 0.9000 -
Cr+Mo+Ni - 0.6300 -
Cr - 0.4000 -
C 0.5200 0.6000 -

Mechanical Properties of steel grade XC 55 H 1

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)
183 (≥) 597 (≥) 23 34 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade XC 55 H 1

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
41 - -     0.42 -  
635 142 - 41.3 422   -  
418 - 14 41.2   411 214

Heat Treatment of steel grade XC 55 H 1

Heat treated : 1241°C - 1233°C

Technological Curves of steel grade XC 55 H 1

Cross Reference Table (Equivalent Grade) of XC 55 H 1

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