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EN 1.4874 Stainless Steel vs. EN 1.7729 Steel

Both EN 1.4874 stainless steel and EN 1.7729 steel are iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4874 stainless steel and the bottom bar is EN 1.7729 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
270
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 6.7
17
Fatigue Strength, MPa 180
500
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 480
910
Tensile Strength: Yield (Proof), MPa 360
750

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1150
430
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
40
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
3.8
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
3.3
Embodied Energy, MJ/kg 110
49
Embodied Water, L/kg 290
59

Common Calculations

PREN (Pitting Resistance) 34
4.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
150
Resilience: Unit (Modulus of Resilience), kJ/m3 310
1500
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16
32
Strength to Weight: Bending, points 16
27
Thermal Diffusivity, mm2/s 3.3
11
Thermal Shock Resistance, points 11
27

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.080
Arsenic (As), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0.35 to 0.65
0.17 to 0.23
Chromium (Cr), % 19 to 22
0.9 to 1.2
Cobalt (Co), % 18.5 to 22
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 23 to 38.9
94.8 to 97
Manganese (Mn), % 0 to 2.0
0.35 to 0.75
Molybdenum (Mo), % 2.5 to 3.0
0.9 to 1.1
Nickel (Ni), % 18 to 22
0 to 0.2
Niobium (Nb), % 0.75 to 1.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 0
0.070 to 0.15
Tungsten (W), % 2.0 to 3.0
0
Vanadium (V), % 0
0.6 to 0.8