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EN 1.4988 Stainless Steel vs. EN 1.6587 Steel

Both EN 1.4988 stainless steel and EN 1.6587 steel are iron alloys. They have 70% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 EN 1.6587 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
160 to 220
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 640
520 to 1420

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 920
440
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
41
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 23
3.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 6.0
1.7
Embodied Energy, MJ/kg 89
22
Embodied Water, L/kg 150
58

Common Calculations

PREN (Pitting Resistance) 22
2.6
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23
18 to 50
Strength to Weight: Bending, points 21
18 to 36
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 14
15 to 42

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0.040 to 0.1
0.15 to 0.21
Chromium (Cr), % 15.5 to 17.5
1.5 to 1.8
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 62.1 to 69.5
94.4 to 96.4
Manganese (Mn), % 0 to 1.5
0.5 to 0.9
Molybdenum (Mo), % 1.1 to 1.5
0.25 to 0.35
Nickel (Ni), % 12.5 to 14.5
1.4 to 1.7
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0
Oxygen (O), % 0
0 to 0.0020
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.3 to 0.6
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0.6 to 0.85
0