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EN 1.4646 Stainless Steel vs. EN 1.7709 Steel

Both EN 1.4646 stainless steel and EN 1.7709 steel are iron alloys. They have 66% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is EN 1.4646 stainless steel and the bottom bar is EN 1.7709 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
200 to 230
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 750
650 to 780

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 910
440
Melting Completion (Liquidus), °C 1390
1470
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.4
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.3
Embodied Energy, MJ/kg 41
32
Embodied Water, L/kg 160
56

Common Calculations

PREN (Pitting Resistance) 23
3.6
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
23 to 27
Strength to Weight: Bending, points 24
21 to 24
Thermal Shock Resistance, points 16
22 to 26

Alloy Composition

Aluminum (Al), % 0
0 to 0.030
Carbon (C), % 0.020 to 0.1
0.17 to 0.25
Chromium (Cr), % 17 to 19
1.2 to 1.5
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 59 to 67.3
95.2 to 97.5
Manganese (Mn), % 10.5 to 12.5
0.4 to 0.8
Molybdenum (Mo), % 0 to 0.5
0.55 to 0.8
Nickel (Ni), % 3.5 to 4.5
0 to 0.6
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.050
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0
0.2 to 0.35