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EN 1.6958 Steel vs. AISI 314 Stainless Steel

Both EN 1.6958 steel and AISI 314 stainless steel are iron alloys. They have 57% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.6958 steel and the bottom bar is AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
45
Fatigue Strength, MPa 700
210
Poisson's Ratio 0.29
0.28
Reduction in Area, % 56
57
Shear Modulus, GPa 73
78
Shear Strength, MPa 700
410
Tensile Strength: Ultimate (UTS), MPa 1140
590
Tensile Strength: Yield (Proof), MPa 1070
230

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 450
1100
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 47
15
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
25
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 2.0
4.3
Embodied Energy, MJ/kg 27
62
Embodied Water, L/kg 60
190

Common Calculations

PREN (Pitting Resistance) 2.9
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
210
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 40
21
Strength to Weight: Bending, points 31
20
Thermal Diffusivity, mm2/s 13
3.9
Thermal Shock Resistance, points 39
14

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0 to 0.25
Chromium (Cr), % 1.2 to 1.7
23 to 26
Iron (Fe), % 92.6 to 94.5
46.7 to 56.5
Manganese (Mn), % 0.2 to 0.5
0 to 2.0
Molybdenum (Mo), % 0.35 to 0.55
0
Nickel (Ni), % 3.3 to 3.8
19 to 22
Phosphorus (P), % 0 to 0.020
0 to 0.045
Silicon (Si), % 0.15 to 0.3
1.5 to 3.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0 to 0.12
0