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SAE-AISI M4 Steel vs. EN 1.4612 Stainless Steel

Both SAE-AISI M4 steel and EN 1.4612 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M4 steel and the bottom bar is EN 1.4612 stainless 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 76
76
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
1690 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1610
1450
Melting Onset (Solidus), °C 1560
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 25
16
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 14
3.6
Embodied Energy, MJ/kg 210
50
Embodied Water, L/kg 110
140

Common Calculations

PREN (Pitting Resistance) 30
19
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 72
60 to 65
Strength to Weight: Bending, points 23 to 45
40 to 43
Thermal Shock Resistance, points 24 to 68
58 to 63

Alloy Composition

Aluminum (Al), % 0
1.4 to 1.8
Carbon (C), % 1.3 to 1.4
0 to 0.015
Chromium (Cr), % 3.8 to 4.8
11 to 12.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 75.9 to 81.4
71.5 to 75.5
Manganese (Mn), % 0.15 to 0.4
0 to 0.1
Molybdenum (Mo), % 4.3 to 5.5
1.8 to 2.3
Nickel (Ni), % 0 to 0.3
10.2 to 11.3
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0.2 to 0.45
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.0050
Titanium (Ti), % 0
0.2 to 0.5
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0

Comparable Variants