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S20433 Stainless Steel vs. S30415 Stainless Steel

Both S20433 stainless steel and S30415 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is S20433 stainless steel and the bottom bar is S30415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 46
45
Fatigue Strength, MPa 250
300
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 82
84
Shear Modulus, GPa 76
77
Shear Strength, MPa 440
470
Tensile Strength: Ultimate (UTS), MPa 630
670
Tensile Strength: Yield (Proof), MPa 270
330

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 900
940
Melting Completion (Liquidus), °C 1400
1410
Melting Onset (Solidus), °C 1360
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.7
3.1
Embodied Energy, MJ/kg 39
43
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 20
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
250
Resilience: Unit (Modulus of Resilience), kJ/m3 180
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
24
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 4.0
5.6
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0 to 0.080
0.040 to 0.060
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 17 to 18
18 to 19
Copper (Cu), % 1.5 to 3.5
0
Iron (Fe), % 64.1 to 72.4
67.8 to 71.8
Manganese (Mn), % 5.5 to 7.5
0 to 0.8
Nickel (Ni), % 3.5 to 5.5
9.0 to 10
Nitrogen (N), % 0.1 to 0.25
0.12 to 0.18
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
1.0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030