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S15700 Stainless Steel vs. EN 1.4988 Stainless Steel

Both S15700 stainless steel and EN 1.4988 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common.

For each property being compared, the top bar is S15700 stainless steel and the bottom bar is EN 1.4988 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 460
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 1.1 to 29
34
Fatigue Strength, MPa 370 to 770
230
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 770 to 1070
430
Tensile Strength: Ultimate (UTS), MPa 1180 to 1890
640
Tensile Strength: Yield (Proof), MPa 500 to 1770
290

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 400
520
Maximum Temperature: Mechanical, °C 870
920
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.4
6.0
Embodied Energy, MJ/kg 47
89
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 23
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 270
180
Resilience: Unit (Modulus of Resilience), kJ/m3 640 to 4660
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 42 to 67
23
Strength to Weight: Bending, points 32 to 43
21
Thermal Diffusivity, mm2/s 4.2
4.0
Thermal Shock Resistance, points 39 to 63
14

Alloy Composition

Aluminum (Al), % 0.75 to 1.5
0
Carbon (C), % 0 to 0.090
0.040 to 0.1
Chromium (Cr), % 14 to 16
15.5 to 17.5
Iron (Fe), % 69.6 to 76.8
62.1 to 69.5
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 2.0 to 3.0
1.1 to 1.5
Nickel (Ni), % 6.5 to 7.7
12.5 to 14.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0
0.060 to 0.14
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0
0.6 to 0.85