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AISI 348H Stainless Steel vs. ASTM A182 Grade F6b

Both AISI 348H stainless steel and ASTM A182 grade F6b are iron alloys. Both are furnished in the annealed condition. They have 84% of their average alloy composition in common. There are 34 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 AISI 348H stainless steel and the bottom bar is ASTM A182 grade F6b.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
260
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
18
Fatigue Strength, MPa 200
440
Poisson's Ratio 0.28
0.28
Reduction in Area, % 51
51
Shear Modulus, GPa 77
76
Shear Strength, MPa 400
530
Tensile Strength: Ultimate (UTS), MPa 580
850
Tensile Strength: Yield (Proof), MPa 230
710

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 500
390
Maximum Temperature: Mechanical, °C 940
750
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 20
8.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.9
2.2
Embodied Energy, MJ/kg 56
30
Embodied Water, L/kg 150
100

Common Calculations

PREN (Pitting Resistance) 18
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
140
Resilience: Unit (Modulus of Resilience), kJ/m3 140
1280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
30
Strength to Weight: Bending, points 20
26
Thermal Diffusivity, mm2/s 4.1
6.7
Thermal Shock Resistance, points 13
31

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.15
Chromium (Cr), % 17 to 19
11.5 to 13.5
Cobalt (Co), % 0 to 0.2
0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 63.8 to 73.6
81.2 to 87.1
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
0.4 to 0.6
Nickel (Ni), % 9.0 to 13
1.0 to 2.0
Niobium (Nb), % 0.32 to 1.0
0
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Tantalum (Ta), % 0 to 0.1
0