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SAE-AISI D4 Steel vs. SAE-AISI M30 Steel

Both SAE-AISI D4 steel and SAE-AISI M30 steel are iron alloys. They have 85% 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 D4 steel and the bottom bar is SAE-AISI M30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1430
1550
Melting Onset (Solidus), °C 1380
1500
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 31
24
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
26
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 3.3
7.2
Embodied Energy, MJ/kg 49
100
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 15
35
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 75
27 to 74
Strength to Weight: Bending, points 24 to 47
24 to 46
Thermal Diffusivity, mm2/s 8.3
6.6
Thermal Shock Resistance, points 23 to 63
25 to 67

Alloy Composition

Carbon (C), % 2.1 to 2.4
0.75 to 0.85
Chromium (Cr), % 11 to 13
3.5 to 4.3
Cobalt (Co), % 0
4.5 to 5.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 80.6 to 86.3
75.2 to 80.9
Manganese (Mn), % 0 to 0.6
0.15 to 0.4
Molybdenum (Mo), % 0.7 to 1.2
7.8 to 9.0
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.6
0.2 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
1.3 to 2.3
Vanadium (V), % 0 to 1.0
1.0 to 1.4

Comparable Variants