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S30435 Stainless Steel vs. S40920 Stainless Steel

Both S30435 stainless steel and S40920 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 84% of their average alloy composition in common.

For each property being compared, the top bar is S30435 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 190
190
Elongation at Break, % 51
22
Fatigue Strength, MPa 170
130
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 77
77
Shear Modulus, GPa 76
75
Shear Strength, MPa 370
270
Tensile Strength: Ultimate (UTS), MPa 510
430
Tensile Strength: Yield (Proof), MPa 170
190

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 900
710
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
26
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
6.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.0
Embodied Energy, MJ/kg 40
28
Embodied Water, L/kg 140
94

Common Calculations

PREN (Pitting Resistance) 17
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
78
Resilience: Unit (Modulus of Resilience), kJ/m3 77
97
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
15
Strength to Weight: Bending, points 18
16
Thermal Diffusivity, mm2/s 4.2
6.9
Thermal Shock Resistance, points 12
15

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 16 to 18
10.5 to 11.7
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 66.9 to 75.5
85.1 to 89.4
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 7.0 to 9.0
0 to 0.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.045
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
0.15 to 0.5