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EN 1.4938 Stainless Steel vs. EN 1.4710 Stainless Steel

Both EN 1.4938 stainless steel and EN 1.4710 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.4938 stainless steel and the bottom bar is EN 1.4710 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 16 to 17
20
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
74

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
360
Maximum Temperature: Mechanical, °C 750
750
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 30
24
Thermal Expansion, µm/m-K 11
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
6.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
7.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
5.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.3
1.8
Embodied Energy, MJ/kg 47
24
Embodied Water, L/kg 110
76

Common Calculations

PREN (Pitting Resistance) 18
7.2
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 8.1
6.5

Alloy Composition

Carbon (C), % 0.080 to 0.15
0.2 to 0.35
Chromium (Cr), % 11 to 12.5
6.0 to 8.0
Iron (Fe), % 80.5 to 84.8
87.4 to 92.3
Manganese (Mn), % 0.4 to 0.9
0.5 to 1.0
Molybdenum (Mo), % 1.5 to 2.0
0 to 0.15
Nickel (Ni), % 2.0 to 3.0
0 to 0.5
Nitrogen (N), % 0.020 to 0.040
0
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.5
1.0 to 2.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0.25 to 0.4
0