MakeItFrom.com
Menu (ESC)

ASTM A387 Grade 22 Steel vs. ASTM A387 Grade 12 Steel

Both ASTM A387 grade 22 steel and ASTM A387 grade 12 steel are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is ASTM A387 grade 22 steel and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
140 to 160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
25
Fatigue Strength, MPa 160 to 240
190 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 300 to 380
300 to 330
Tensile Strength: Ultimate (UTS), MPa 480 to 600
470 to 520
Tensile Strength: Yield (Proof), MPa 230 to 350
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 460
430
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
44
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
2.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.6
Embodied Energy, MJ/kg 23
21
Embodied Water, L/kg 58
51

Common Calculations

PREN (Pitting Resistance) 5.6
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 85 to 110
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
180 to 250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17 to 21
16 to 18
Strength to Weight: Bending, points 17 to 20
17 to 18
Thermal Diffusivity, mm2/s 11
12
Thermal Shock Resistance, points 14 to 17
14 to 15

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.050 to 0.17
Chromium (Cr), % 2.0 to 2.5
0.8 to 1.2
Iron (Fe), % 95.1 to 96.8
97 to 98.2
Manganese (Mn), % 0.3 to 0.6
0.4 to 0.65
Molybdenum (Mo), % 0.9 to 1.1
0.45 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0.15 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.025

Comparable Variants