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EN 1.6958 Steel vs. EN 1.4865 Stainless Steel

Both EN 1.6958 steel and EN 1.4865 stainless steel are iron alloys. They have 46% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.6958 steel and the bottom bar is EN 1.4865 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
6.8
Fatigue Strength, MPa 700
120
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 1140
470
Tensile Strength: Yield (Proof), MPa 1070
250

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 450
1020
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 47
12
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
33
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.0
5.8
Embodied Energy, MJ/kg 27
81
Embodied Water, L/kg 60
200

Common Calculations

PREN (Pitting Resistance) 2.9
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
27
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 40
16
Strength to Weight: Bending, points 31
17
Thermal Diffusivity, mm2/s 13
3.1
Thermal Shock Resistance, points 39
11

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0.3 to 0.5
Chromium (Cr), % 1.2 to 1.7
18 to 21
Iron (Fe), % 92.6 to 94.5
34.4 to 44.7
Manganese (Mn), % 0.2 to 0.5
0 to 2.0
Molybdenum (Mo), % 0.35 to 0.55
0 to 0.5
Nickel (Ni), % 3.3 to 3.8
36 to 39
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0.15 to 0.3
1.0 to 2.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0 to 0.12
0