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EN 1.1127 Steel vs. ASTM A203 Steel

Both EN 1.1127 steel and ASTM A203 steel are iron alloys.

For each property being compared, the top bar is EN 1.1127 steel and the bottom bar is ASTM A203 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 230
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14 to 25
22 to 26
Fatigue Strength, MPa 280 to 370
210 to 280
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 420 to 480
330 to 370
Tensile Strength: Ultimate (UTS), MPa 660 to 790
520 to 590
Tensile Strength: Yield (Proof), MPa 410 to 580
290 to 390

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 49
52
Thermal Expansion, µm/m-K 12
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
3.2 to 4.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.6 to 1.7
Embodied Energy, MJ/kg 19
21 to 23
Embodied Water, L/kg 49
50 to 52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 140
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 880
230 to 410
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 28
18 to 21
Strength to Weight: Bending, points 22 to 24
18 to 20
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 21 to 25
15 to 17