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MAR-M Hf mod.

Description

MAR-M Hf mod. High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: MAR-M Hf mod.
Category Type Steel Grade Standard Country Application
Steel GradesHigh Alloy MAR-M Hf mod.
Marage 300
Marage 350
MARINLOY HN
MAR-M 200
MAR-M 246
MAR-M 302
MAR-M 322
MAR-M 421
MAR-M 432
MAR-M 509

Chemical composition(mass fraction)(wt.%) of the MAR-M Hf mod.

C
Si
Mn
P
S
Cr Ni
0.13-0.17 0.2 0.2   0.015 8-10 ...
Mo Al Cu Nb Ti V Fe
2.25-2.75 5.25-5.75 0.1   1.25-1.75   0.1
N Co Pb B Other Hf  
  9-10   0.01-0.02 W 9-11
Ta 1.25-1.75
Zr 0.03-0.08
1.5-2.0  
             

Mechanical Properties of steel grade MAR-M Hf mod.

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)
394 (≥) 595 (≥) 41 11 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade MAR-M Hf mod.

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
43 - -     0.24 -  
112 366 - 31.3 142   -  
275 - 31 34.2   244 232

Heat Treatment of steel grade MAR-M Hf mod.

Heat treated : 1341°C - 1153°C

Technological Curves of steel grade MAR-M Hf mod.

Cross Reference Table (Equivalent Grade) of MAR-M Hf mod.

Grade Standard Country Application
SUS304HFB JIS Japan austenitic special steel
SUS316HFB JIS Japan austenitic special steel
SUS321HFB JIS Japan austenitic special steel
SUS347HFB JIS Japan austenitic special steel
ASTM HF AISI USA
HF ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
HF ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application

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