MakeItFrom.com
Menu (ESC)

ASTM A387 Grade 91 Class 2 vs. ASTM A225 Steel

Both ASTM A387 grade 91 class 2 and ASTM A225 steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 91 class 2 and the bottom bar is ASTM A225 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190 to 250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
21 to 23
Fatigue Strength, MPa 330
330 to 390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 420
390 to 520
Tensile Strength: Ultimate (UTS), MPa 670
620 to 830
Tensile Strength: Yield (Proof), MPa 470
460 to 550

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
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 26
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.8
Embodied Energy, MJ/kg 37
24 to 25
Embodied Water, L/kg 88
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
120 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 580
580 to 820
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
22 to 29
Strength to Weight: Bending, points 22
21 to 25
Thermal Diffusivity, mm2/s 6.9
14
Thermal Shock Resistance, points 19
18 to 24