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Annealed SAE-AISI M4 vs. Annealed S17600 Stainless Steel

Both annealed SAE-AISI M4 and annealed S17600 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 80% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is annealed SAE-AISI M4 and the bottom bar is annealed S17600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
270
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 770
940

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1610
1430
Melting Onset (Solidus), °C 1560
1390
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 25
13
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 14
2.9
Embodied Energy, MJ/kg 210
42
Embodied Water, L/kg 110
130

Common Calculations

PREN (Pitting Resistance) 30
17
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
34
Strength to Weight: Bending, points 23
28
Thermal Diffusivity, mm2/s 6.9
4.1
Thermal Shock Resistance, points 24
31

Alloy Composition

Aluminum (Al), % 0
0 to 0.4
Carbon (C), % 1.3 to 1.4
0 to 0.080
Chromium (Cr), % 3.8 to 4.8
16 to 17.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 75.9 to 81.4
71.3 to 77.6
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 4.3 to 5.5
0
Nickel (Ni), % 0 to 0.3
6.0 to 7.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.4 to 1.2
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0