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EN 1.4971 Stainless Steel vs. S30815 Stainless Steel

Both EN 1.4971 stainless steel and S30815 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is S30815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
190
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
45
Fatigue Strength, MPa 270
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 530
480
Tensile Strength: Ultimate (UTS), MPa 800
680
Tensile Strength: Yield (Proof), MPa 340
350

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 570
430
Maximum Temperature: Mechanical, °C 1100
1020
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 450
490
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 15
17

Otherwise Unclassified Properties

Base Metal Price, % relative 70
17
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.6
3.3
Embodied Energy, MJ/kg 110
47
Embodied Water, L/kg 300
160

Common Calculations

PREN (Pitting Resistance) 38
24
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
260
Resilience: Unit (Modulus of Resilience), kJ/m3 280
310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
25
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 3.4
4.0
Thermal Shock Resistance, points 19
15

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.050 to 0.1
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 20 to 22.5
20 to 22
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
62.8 to 68.4
Manganese (Mn), % 0 to 2.0
0 to 0.8
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
10 to 12
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0.14 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
1.4 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 2.0 to 3.0
0