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EN 1.7034 Steel vs. EN 1.7177 Steel

Both EN 1.7034 steel and EN 1.7177 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.7034 steel and the bottom bar is EN 1.7177 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 250
200 to 480
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 510 to 1780
660 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
420
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 50
49

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 63
23 to 71
Strength to Weight: Bending, points 18 to 42
21 to 45
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 15 to 52
19 to 59

Alloy Composition

Carbon (C), % 0.34 to 0.41
0.55 to 0.65
Chromium (Cr), % 0.9 to 1.2
0.6 to 0.9
Iron (Fe), % 97 to 98.2
97 to 98.2
Manganese (Mn), % 0.6 to 0.9
0.7 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.025

Comparable Variants