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ASTM A204 Steel vs. EN 1.1221 Steel

Both ASTM A204 steel and EN 1.1221 steel are iron alloys.

For each property being compared, the top bar is ASTM A204 steel and the bottom bar is EN 1.1221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
210 to 250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18 to 22
10 to 21
Fatigue Strength, MPa 200 to 220
240 to 340
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Shear Strength, MPa 330 to 360
450 to 520
Tensile Strength: Ultimate (UTS), MPa 520 to 590
730 to 870
Tensile Strength: Yield (Proof), MPa 290 to 330
390 to 550

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
400
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420 to 1430
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
48
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
2.1
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.5
Embodied Energy, MJ/kg 20
19
Embodied Water, L/kg 47
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 95
67 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 290
410 to 800
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 21
26 to 31
Strength to Weight: Bending, points 18 to 20
23 to 26
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 15 to 17
23 to 28