ASTM A369 Grade FP5 vs. Chromium 33

ASTM A369 grade FP5 belongs to the iron alloys classification, while chromium 33 belongs to the otherwise unclassified metals. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP5 and the bottom bar is chromium 33.

ASTM A369 Grade FP5 Cr-Mo Steel Chromium Alloy 33 (R20033)

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		20
Elongation at Break, %		45

Poisson's Ratio		0.29
Poisson's Ratio		0.27

Shear Modulus, GPa		74
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		470
Tensile Strength: Ultimate (UTS), MPa		850

Tensile Strength: Yield (Proof), MPa		240
Tensile Strength: Yield (Proof), MPa		430

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		320

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		4.3
Base Metal Price, % relative		36

Density, g/cm³		7.8
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		1.7
Embodied Carbon, kg CO₂/kg material		6.0

Embodied Energy, MJ/kg		23
Embodied Energy, MJ/kg		84

Embodied Water, L/kg		69
Embodied Water, L/kg		250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		80
Resilience: Ultimate (Unit Rupture Work), MJ/m³		320

Resilience: Unit (Modulus of Resilience), kJ/m³		140
Resilience: Unit (Modulus of Resilience), kJ/m³		450

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

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

Strength to Weight: Axial, points		17
Strength to Weight: Axial, points		30

Strength to Weight: Bending, points		17
Strength to Weight: Bending, points		25

Thermal Shock Resistance, points		13
Thermal Shock Resistance, points		21

Alloy Composition

Carbon (C), %		0 to 0.15
Carbon (C), %		0 to 0.015

Chromium (Cr), %		4.0 to 6.0
Chromium (Cr), %		31 to 35

Copper (Cu), %		0
Copper (Cu), %		0.3 to 1.2

Iron (Fe), %		92.1 to 95.3
Iron (Fe), %		25.7 to 37.9

Manganese (Mn), %		0.3 to 0.6
Manganese (Mn), %		0 to 2.0

Molybdenum (Mo), %		0.45 to 0.65
Molybdenum (Mo), %		0.5 to 2.0

Nickel (Ni), %		0
Nickel (Ni), %		30 to 33

Nitrogen (N), %		0
Nitrogen (N), %		0.35 to 0.6

Phosphorus (P), %		0 to 0.025
Phosphorus (P), %		0 to 0.020

Silicon (Si), %		0 to 0.5
Silicon (Si), %		0 to 0.5

Sulfur (S), %		0 to 0.025
Sulfur (S), %		0 to 0.010