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ACI-ASTM CT15C Steel vs. AISI 334 Stainless Steel

Both ACI-ASTM CT15C steel and AISI 334 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CT15C steel and the bottom bar is AISI 334 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
34
Fatigue Strength, MPa 130
150
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 500
540
Tensile Strength: Yield (Proof), MPa 190
190

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 560
490
Maximum Temperature: Mechanical, °C 1080
1000
Melting Completion (Liquidus), °C 1410
1410
Melting Onset (Solidus), °C 1360
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 36
22
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 6.1
4.1
Embodied Energy, MJ/kg 88
59
Embodied Water, L/kg 190
170

Common Calculations

PREN (Pitting Resistance) 20
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
140
Resilience: Unit (Modulus of Resilience), kJ/m3 93
96
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
19
Strength to Weight: Bending, points 17
19
Thermal Shock Resistance, points 12
12

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0.050 to 0.15
0 to 0.080
Chromium (Cr), % 19 to 21
18 to 20
Iron (Fe), % 40.3 to 49.2
55.7 to 62.7
Manganese (Mn), % 0.15 to 1.5
0 to 1.0
Nickel (Ni), % 31 to 34
19 to 21
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6