AISI 347 Stainless Steel vs. ASTM A387 Grade 22 Steel
Both AISI 347 stainless steel and ASTM A387 grade 22 steel are iron alloys. They have 72% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is AISI 347 stainless steel and the bottom bar is ASTM A387 grade 22 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 160 to 210 | |
150 to 180 |
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
190 |
Elongation at Break, % | 34 to 46 | |
21 |
Fatigue Strength, MPa | 220 to 270 | |
160 to 240 |
Poisson's Ratio | 0.28 | |
0.29 |
Shear Modulus, GPa | 77 | |
74 |
Shear Strength, MPa | 430 to 460 | |
300 to 380 |
Tensile Strength: Ultimate (UTS), MPa | 610 to 690 | |
480 to 600 |
Tensile Strength: Yield (Proof), MPa | 240 to 350 | |
230 to 350 |
Thermal Properties
Latent Heat of Fusion, J/g | 290 | |
260 |
Maximum Temperature: Mechanical, °C | 870 | |
460 |
Melting Completion (Liquidus), °C | 1430 | |
1470 |
Melting Onset (Solidus), °C | 1400 | |
1430 |
Specific Heat Capacity, J/kg-K | 480 | |
470 |
Thermal Conductivity, W/m-K | 16 | |
40 |
Thermal Expansion, µm/m-K | 17 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 2.4 | |
7.5 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
8.6 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 19 | |
3.8 |
Density, g/cm3 | 7.8 | |
7.9 |
Embodied Carbon, kg CO2/kg material | 3.6 | |
1.7 |
Embodied Energy, MJ/kg | 52 | |
23 |
Embodied Water, L/kg | 150 | |
58 |
Common Calculations
PREN (Pitting Resistance) | 18 | |
5.6 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 to 220 | |
85 to 110 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 150 to 310 | |
140 to 320 |
Stiffness to Weight: Axial, points | 14 | |
13 |
Stiffness to Weight: Bending, points | 25 | |
24 |
Strength to Weight: Axial, points | 22 to 25 | |
17 to 21 |
Strength to Weight: Bending, points | 20 to 22 | |
17 to 20 |
Thermal Diffusivity, mm2/s | 4.3 | |
11 |
Thermal Shock Resistance, points | 13 to 15 | |
14 to 17 |
Alloy Composition
Carbon (C), % | 0 to 0.080 | |
0.050 to 0.15 |
Chromium (Cr), % | 17 to 19 | |
2.0 to 2.5 |
Iron (Fe), % | 64.1 to 74 | |
95.1 to 96.8 |
Manganese (Mn), % | 0 to 2.0 | |
0.3 to 0.6 |
Molybdenum (Mo), % | 0 | |
0.9 to 1.1 |
Nickel (Ni), % | 9.0 to 13 | |
0 |
Niobium (Nb), % | 0 to 1.0 | |
0 |
Phosphorus (P), % | 0 to 0.045 | |
0 to 0.025 |
Silicon (Si), % | 0 to 0.75 | |
0 to 0.5 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.025 |