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AISI 348H Stainless Steel vs. ASTM A266 Carbon Steel

Both AISI 348H stainless steel and ASTM A266 carbon steel are iron alloys. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 348H stainless steel and the bottom bar is ASTM A266 carbon steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
21 to 26
Fatigue Strength, MPa 200
170 to 200
Poisson's Ratio 0.28
0.29
Reduction in Area, % 51
34 to 43
Shear Modulus, GPa 77
73
Shear Strength, MPa 400
320 to 380
Tensile Strength: Ultimate (UTS), MPa 580
500 to 600
Tensile Strength: Yield (Proof), MPa 230
230 to 290

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 940
400
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
51 to 52
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.1 to 8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 20
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.9
1.4
Embodied Energy, MJ/kg 56
18 to 19
Embodied Water, L/kg 150
46 to 47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
110
Resilience: Unit (Modulus of Resilience), kJ/m3 140
140 to 230
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
18 to 21
Strength to Weight: Bending, points 20
18 to 20
Thermal Diffusivity, mm2/s 4.1
14
Thermal Shock Resistance, points 13
16 to 19