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AWS E307 vs. AISI 302 Stainless Steel

Both AWS E307 and AISI 302 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS E307 and the bottom bar is AISI 302 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
4.5 to 46
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 660
580 to 1430

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 14
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 17
15
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.5
3.0
Embodied Energy, MJ/kg 49
42
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 23
19
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
21 to 51
Strength to Weight: Bending, points 22
20 to 36
Thermal Diffusivity, mm2/s 4.1
4.4
Thermal Shock Resistance, points 17
12 to 31

Alloy Composition

Carbon (C), % 0.040 to 0.14
0 to 0.15
Chromium (Cr), % 18 to 21.5
17 to 19
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 59.6 to 69.2
67.9 to 75
Manganese (Mn), % 3.3 to 4.8
0 to 2.0
Molybdenum (Mo), % 0.5 to 1.5
0
Nickel (Ni), % 9.0 to 10.7
8.0 to 10
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030