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EN 1.7729 Steel vs. EN 1.4466 Stainless Steel

Both EN 1.7729 steel and EN 1.4466 stainless steel are iron alloys. They have 52% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.7729 steel and the bottom bar is EN 1.4466 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
42
Fatigue Strength, MPa 500
250
Impact Strength: V-Notched Charpy, J 46
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
80
Shear Strength, MPa 560
440
Tensile Strength: Ultimate (UTS), MPa 910
640
Tensile Strength: Yield (Proof), MPa 750
280

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 430
1100
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1430
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
14
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
28
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.3
5.0
Embodied Energy, MJ/kg 49
70
Embodied Water, L/kg 59
200

Common Calculations

PREN (Pitting Resistance) 4.4
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1500
200
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 32
22
Strength to Weight: Bending, points 27
21
Thermal Diffusivity, mm2/s 11
3.7
Thermal Shock Resistance, points 27
14

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 0.020
Chromium (Cr), % 0.9 to 1.2
24 to 26
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.8 to 97
45.6 to 52.9
Manganese (Mn), % 0.35 to 0.75
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
2.0 to 2.5
Nickel (Ni), % 0 to 0.2
21 to 23
Nitrogen (N), % 0
0.1 to 0.16
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.010
Tin (Sn), % 0 to 0.020
0
Titanium (Ti), % 0.070 to 0.15
0
Vanadium (V), % 0.6 to 0.8
0