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EN 1.7729 Steel vs. AISI 201L Stainless Steel

Both EN 1.7729 steel and AISI 201L stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7729 steel and the bottom bar is AISI 201L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
190 to 320
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
22 to 46
Fatigue Strength, MPa 500
270 to 530
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 560
520 to 660
Tensile Strength: Ultimate (UTS), MPa 910
740 to 1040
Tensile Strength: Yield (Proof), MPa 750
290 to 790

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 430
880
Melting Completion (Liquidus), °C 1470
1410
Melting Onset (Solidus), °C 1430
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.3
2.6
Embodied Energy, MJ/kg 49
38
Embodied Water, L/kg 59
140

Common Calculations

PREN (Pitting Resistance) 4.4
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
210 to 300
Resilience: Unit (Modulus of Resilience), kJ/m3 1500
220 to 1570
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 32
27 to 37
Strength to Weight: Bending, points 27
24 to 30
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 27
16 to 23

Alloy Composition

Aluminum (Al), % 0.015 to 0.080
0
Arsenic (As), % 0 to 0.020
0
Boron (B), % 0.0010 to 0.010
0
Carbon (C), % 0.17 to 0.23
0 to 0.030
Chromium (Cr), % 0.9 to 1.2
16 to 18
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.8 to 97
67.9 to 75
Manganese (Mn), % 0.35 to 0.75
5.5 to 7.5
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0 to 0.2
3.5 to 5.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.020
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Tin (Sn), % 0 to 0.020
0
Titanium (Ti), % 0.070 to 0.15
0
Vanadium (V), % 0.6 to 0.8
0