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S21603 Stainless Steel vs. EN 1.7729 Steel

Both S21603 stainless steel and EN 1.7729 steel are iron alloys. They have 66% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S21603 stainless steel and the bottom bar is EN 1.7729 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
270
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
17
Fatigue Strength, MPa 360
500
Poisson's Ratio 0.28
0.29
Reduction in Area, % 57
56
Shear Modulus, GPa 79
73
Shear Strength, MPa 490
560
Tensile Strength: Ultimate (UTS), MPa 690
910
Tensile Strength: Yield (Proof), MPa 390
750

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 990
430
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 17
3.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.6
3.3
Embodied Energy, MJ/kg 50
49
Embodied Water, L/kg 160
59

Common Calculations

PREN (Pitting Resistance) 34
4.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
150
Resilience: Unit (Modulus of Resilience), kJ/m3 380
1500
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
32
Strength to Weight: Bending, points 22
27
Thermal Shock Resistance, points 15
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 to 0.030
0.17 to 0.23
Chromium (Cr), % 17.5 to 22
0.9 to 1.2
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 57.6 to 67.8
94.8 to 97
Manganese (Mn), % 7.5 to 9.0
0.35 to 0.75
Molybdenum (Mo), % 2.0 to 3.0
0.9 to 1.1
Nickel (Ni), % 5.0 to 7.0
0 to 0.2
Nitrogen (N), % 0.25 to 0.5
0
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 0.75
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
Vanadium (V), % 0
0.6 to 0.8