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EN 1.4318 Stainless Steel vs. S30815 Stainless Steel

Both EN 1.4318 stainless steel and S30815 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4318 stainless steel and the bottom bar is S30815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 44
45
Fatigue Strength, MPa 340
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 520
480
Tensile Strength: Ultimate (UTS), MPa 740
680
Tensile Strength: Yield (Proof), MPa 380
350

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 910
1020
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1380
1360
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.8
3.3
Embodied Energy, MJ/kg 39
47
Embodied Water, L/kg 130
160

Common Calculations

PREN (Pitting Resistance) 20
24
Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
260
Resilience: Unit (Modulus of Resilience), kJ/m3 360
310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
25
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 17
15

Alloy Composition

Carbon (C), % 0 to 0.030
0.050 to 0.1
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 16.5 to 18.5
20 to 22
Iron (Fe), % 70.2 to 77.4
62.8 to 68.4
Manganese (Mn), % 0 to 2.0
0 to 0.8
Nickel (Ni), % 6.0 to 8.0
10 to 12
Nitrogen (N), % 0.1 to 0.2
0.14 to 0.2
Phosphorus (P), % 0 to 0.045
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