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EN 1.7335 Steel vs. EN 1.7729 Steel

Both EN 1.7335 steel and EN 1.7729 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.7335 steel and the bottom bar is EN 1.7729 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 160
270
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21 to 22
17
Fatigue Strength, MPa 200 to 220
500
Impact Strength: V-Notched Charpy, J 31 to 35
46
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 310 to 330
560
Tensile Strength: Ultimate (UTS), MPa 500 to 520
910
Tensile Strength: Yield (Proof), MPa 280 to 310
750

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 430
430
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
3.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.3
Embodied Energy, MJ/kg 21
49
Embodied Water, L/kg 52
59

Common Calculations

PREN (Pitting Resistance) 2.7
4.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 97
150
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 260
1500
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
32
Strength to Weight: Bending, points 18
27
Thermal Diffusivity, mm2/s 12
11
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), % 0.080 to 0.18
0.17 to 0.23
Chromium (Cr), % 0.7 to 1.2
0.9 to 1.2
Copper (Cu), % 0 to 0.3
0 to 0.2
Iron (Fe), % 96.4 to 98.4
94.8 to 97
Manganese (Mn), % 0.4 to 1.0
0.35 to 0.75
Molybdenum (Mo), % 0.4 to 0.6
0.9 to 1.1
Nickel (Ni), % 0
0 to 0.2
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.010
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