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S41050 Stainless Steel vs. S30530 Stainless Steel

Both S41050 stainless steel and S30530 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 79% of their average alloy composition in common.

For each property being compared, the top bar is S41050 stainless steel and the bottom bar is S30530 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
46
Fatigue Strength, MPa 160
210
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 77
79
Shear Modulus, GPa 76
77
Shear Strength, MPa 300
410
Tensile Strength: Ultimate (UTS), MPa 470
590
Tensile Strength: Yield (Proof), MPa 230
230

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 720
970
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.9
3.4
Embodied Energy, MJ/kg 27
48
Embodied Water, L/kg 97
150

Common Calculations

PREN (Pitting Resistance) 12
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98
210
Resilience: Unit (Modulus of Resilience), kJ/m3 140
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 7.2
4.1
Thermal Shock Resistance, points 17
13

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.080
Chromium (Cr), % 10.5 to 12.5
17 to 20.5
Copper (Cu), % 0
0.75 to 3.5
Iron (Fe), % 84.2 to 88.9
58.4 to 72.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 0.6 to 1.1
8.5 to 11.5
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0.5 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030