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EN 1.4855 Stainless Steel vs. EN 1.7706 Steel

Both EN 1.4855 stainless steel and EN 1.7706 steel are iron alloys. They have 50% of their average alloy composition in common. There are 29 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 1.4855 stainless steel and the bottom bar is EN 1.7706 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 4.6
17
Fatigue Strength, MPa 120
330
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 500
690
Tensile Strength: Yield (Proof), MPa 250
500

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Maximum Temperature: Mechanical, °C 1050
440
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1350
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
40
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 34
3.7
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 5.9
2.3
Embodied Energy, MJ/kg 85
32
Embodied Water, L/kg 200
57

Common Calculations

PREN (Pitting Resistance) 25
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
110
Resilience: Unit (Modulus of Resilience), kJ/m3 160
670
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 3.7
11
Thermal Shock Resistance, points 11
20

Alloy Composition

Carbon (C), % 0.3 to 0.5
0.15 to 0.2
Chromium (Cr), % 23 to 25
1.2 to 1.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 42.6 to 51.9
94.7 to 97.1
Manganese (Mn), % 0 to 2.0
0.5 to 0.9
Molybdenum (Mo), % 0 to 0.5
0.9 to 1.1
Nickel (Ni), % 23 to 25
0 to 0.4
Niobium (Nb), % 0.8 to 1.8
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 1.0 to 2.5
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0
0.2 to 0.3