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L 21 HMF

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Poland PN L21HMF Cast steel for high temperature service -- Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: L21HMF / L 21 HMF
Category Grade Standard Region/Area Standard Content
Metals L 21 HMF PN H83157 Poland Cast steel for high temperature service -- Grades

Chemical composition(mass fraction)(wt.%) of the L 21 HMF

Element Min Max Similar
V 0.2000 0.3500 -
Si 0.2000 0.5000 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.3000 -
Mo 0.5000 0.7000 -
Mn 0.4000 0.7000 -
Cu - 0.3000 -
Cr 0.9000 1.2000 -
C 0.1800 0.2500 -

Mechanical Properties of steel grade L 21 HMF

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)
663 (≥) 234 (≥) 34 24 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade L 21 HMF

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
14 - -     0.34 -  
728 771 - 33.3 113   -  
746 - 32 13.2   443 421

Heat Treatment of steel grade L 21 HMF

Heat treated : 1819°C - 1813°C

Technological Curves of steel grade L 21 HMF

Cross Reference Table (Equivalent Grade) of L 21 HMF

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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