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ASTM A242 HSLA Steel vs. EN 1.0261 Steel

Both ASTM A242 HSLA steel and EN 1.0261 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is ASTM A242 HSLA steel and the bottom bar is EN 1.0261 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
16
Fatigue Strength, MPa 230
270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 310
310
Tensile Strength: Ultimate (UTS), MPa 490
510
Tensile Strength: Yield (Proof), MPa 330
410

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 46
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
76
Resilience: Unit (Modulus of Resilience), kJ/m3 290
460
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
18
Strength to Weight: Bending, points 17
18
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 14
16

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.21
Copper (Cu), % 0.2 to 0.45
0
Iron (Fe), % 98.2 to 99.8
97.6 to 100
Manganese (Mn), % 0 to 1.0
0 to 1.6
Phosphorus (P), % 0 to 0.15
0 to 0.045
Silicon (Si), % 0
0 to 0.55
Sulfur (S), % 0 to 0.050
0 to 0.045