K93050 Alloy vs. ACI-ASTM CD4MCu Steel

Both K93050 alloy and ACI-ASTM CD4MCu steel are iron alloys. They have 69% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is K93050 alloy and the bottom bar is ACI-ASTM CD4MCu steel.

UNS K93050 Low Expansion Alloy ACI-ASTM CD4MCu (ASTM A890 Grade 1A, J93370) Cast Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.3
Poisson's Ratio		0.27

Shear Modulus, GPa		72
Shear Modulus, GPa		79

Tensile Strength: Ultimate (UTS), MPa		500 to 680
Tensile Strength: Ultimate (UTS), MPa		770

Thermal Properties

Latent Heat of Fusion, J/g		270
Latent Heat of Fusion, J/g		300

Melting Completion (Liquidus), °C		1430
Melting Completion (Liquidus), °C		1430

Melting Onset (Solidus), °C		1380
Melting Onset (Solidus), °C		1380

Specific Heat Capacity, J/kg-K		460
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Base Metal Price, % relative		26
Base Metal Price, % relative		18

Density, g/cm³		8.2
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		4.7
Embodied Carbon, kg CO₂/kg material		3.5

Embodied Energy, MJ/kg		65
Embodied Energy, MJ/kg		49

Embodied Water, L/kg		120
Embodied Water, L/kg		180

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		17 to 23
Strength to Weight: Axial, points		28

Strength to Weight: Bending, points		17 to 21
Strength to Weight: Bending, points		24

Thermal Shock Resistance, points		16 to 21
Thermal Shock Resistance, points		21

Alloy Composition

Carbon (C), %		0 to 0.15
Carbon (C), %		0 to 0.040

Chromium (Cr), %		0 to 0.25
Chromium (Cr), %		24.5 to 26.5

Cobalt (Co), %		0 to 0.5
Cobalt (Co), %		0

Copper (Cu), %		0
Copper (Cu), %		2.8 to 3.3

Iron (Fe), %		61.4 to 63.9
Iron (Fe), %		59.9 to 66.3

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		1.8 to 2.3

Nickel (Ni), %		36
Nickel (Ni), %		4.8 to 6.0

Phosphorus (P), %		0 to 0.020
Phosphorus (P), %		0 to 0.040

Selenium (Se), %		0.15 to 0.3
Selenium (Se), %		0

Silicon (Si), %		0 to 0.35
Silicon (Si), %		0 to 1.0

Sulfur (S), %		0 to 0.020
Sulfur (S), %		0 to 0.040