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EN 1.7709 Steel vs. ASTM A387 Grade 22L Class 1

Both EN 1.7709 steel and ASTM A387 grade 22L class 1 are iron alloys. They have a very high 99% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.7709 steel and the bottom bar is ASTM A387 grade 22L class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 650 to 780
500

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 440
460
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 33
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
3.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.3
1.7
Embodied Energy, MJ/kg 32
23
Embodied Water, L/kg 56
58

Common Calculations

PREN (Pitting Resistance) 3.6
5.6
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 27
18
Strength to Weight: Bending, points 21 to 24
18
Thermal Diffusivity, mm2/s 8.9
11
Thermal Shock Resistance, points 22 to 26
14

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Carbon (C), % 0.17 to 0.25
0 to 0.1
Chromium (Cr), % 1.2 to 1.5
2.0 to 2.5
Iron (Fe), % 95.2 to 97.5
95.2 to 96.8
Manganese (Mn), % 0.4 to 0.8
0.3 to 0.6
Molybdenum (Mo), % 0.55 to 0.8
0.9 to 1.1
Nickel (Ni), % 0 to 0.6
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0.2 to 0.35
0