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S43037 Stainless Steel vs. S40920 Stainless Steel

Both S43037 stainless steel and S40920 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is S43037 stainless steel and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 25
22
Fatigue Strength, MPa 160
130
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 77
77
Shear Modulus, GPa 77
75
Shear Strength, MPa 260
270
Tensile Strength: Ultimate (UTS), MPa 410
430
Tensile Strength: Yield (Proof), MPa 230
190

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 510
450
Maximum Temperature: Mechanical, °C 880
710
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
26
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
6.5
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.3
2.0
Embodied Energy, MJ/kg 32
28
Embodied Water, L/kg 120
94

Common Calculations

PREN (Pitting Resistance) 18
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 88
78
Resilience: Unit (Modulus of Resilience), kJ/m3 130
97
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 15
15
Strength to Weight: Bending, points 16
16
Thermal Diffusivity, mm2/s 6.7
6.9
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 16 to 19
10.5 to 11.7
Iron (Fe), % 77.9 to 83.9
85.1 to 89.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0.1 to 1.0
0.15 to 0.5