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EN 1.4988 Stainless Steel vs. S20910 Stainless Steel

Both EN 1.4988 stainless steel and S20910 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 31 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 1.4988 stainless steel and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
230 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
14 to 39
Fatigue Strength, MPa 230
310 to 460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Shear Strength, MPa 430
500 to 570
Tensile Strength: Ultimate (UTS), MPa 640
780 to 940
Tensile Strength: Yield (Proof), MPa 290
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 520
460
Maximum Temperature: Mechanical, °C 920
1080
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 23
22
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 6.0
4.8
Embodied Energy, MJ/kg 89
68
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 22
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 210
460 to 1640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
28 to 33
Strength to Weight: Bending, points 21
24 to 27
Thermal Diffusivity, mm2/s 4.0
3.6
Thermal Shock Resistance, points 14
17 to 21

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.060
Chromium (Cr), % 15.5 to 17.5
20.5 to 23.5
Iron (Fe), % 62.1 to 69.5
52.1 to 62.1
Manganese (Mn), % 0 to 1.5
4.0 to 6.0
Molybdenum (Mo), % 1.1 to 1.5
1.5 to 3.0
Nickel (Ni), % 12.5 to 14.5
11.5 to 13.5
Niobium (Nb), % 0.4 to 1.2
0.1 to 0.3
Nitrogen (N), % 0.060 to 0.14
0.2 to 0.4
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.3 to 0.6
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0.6 to 0.85
0.1 to 0.3