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GOST 38H2N2MA Details

38H2N2MA Application:Structural alloy steel bars. Specifications

Category Type Grade Designations
Grades Stainless Steels - Special Steels 38H2N2MA Russia - GOST , GOST 4543 - Structural alloy steel bars. Specifications
GOST 8479 - Structural carbon and alloyed steel forgings. General specification

Chemical composition(wt.%) of 38H2N2MA grade: GOST 4543

Elements Min.(≥) Max.(≤)
C 0.33 0.40
Si 0.17 0.37
Mn 0.25 0.50
Ni 1.30 1.70
S - 0.025
P - 0.025
Cr 1.3 1.7
Mo 0.20 0.30
Cu - 0.30

Mechanical properties of grade 38H2N2MA GOST 4543

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
289 (≥) 265 (≥) 23 14 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical properties of grade 38H2N2MA GOST 4543

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
658 (≥) 768 (≥) 12 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 343
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
518 727 263

38H2N2MA - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
38Х2Н2МА GOST Russia
Structural alloy steel bars. Specifications
38H2N2MA GOST Russia
Structural alloy steel bars. Specifications

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