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SAE-AISI M34 Steel vs. SAE-AISI D4 Steel

Both SAE-AISI M34 steel and SAE-AISI D4 steel are iron alloys. They have 81% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M34 steel and the bottom bar is SAE-AISI D4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
74
Tensile Strength: Ultimate (UTS), MPa 800 to 2170
760 to 2060

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1540
1430
Melting Onset (Solidus), °C 1500
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 24
31
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 32
8.0
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 9.5
3.3
Embodied Energy, MJ/kg 140
49
Embodied Water, L/kg 150
100

Common Calculations

PREN (Pitting Resistance) 35
15
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 74
27 to 75
Strength to Weight: Bending, points 23 to 46
24 to 47
Thermal Diffusivity, mm2/s 6.7
8.3
Thermal Shock Resistance, points 25 to 67
23 to 63

Alloy Composition

Carbon (C), % 0.85 to 0.92
2.1 to 2.4
Chromium (Cr), % 3.5 to 4.0
11 to 13
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 71.3 to 76.5
80.6 to 86.3
Manganese (Mn), % 0.15 to 0.4
0 to 0.6
Molybdenum (Mo), % 7.8 to 9.2
0.7 to 1.2
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.9 to 2.3
0 to 1.0

Comparable Variants