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ASTM A436 Type 4 (L-NiSiCr 30 5 5, F41005) Cast Iron

ASTM A436 type 4 is a type of austenitic grey cast iron. Cited properties are appropriate for the stress relieved condition. ASTM A436 Type 4 is the ASTM designation for this material. F41005 is the UNS number. Additionally, the AFNOR (French) designation is FGL Ni30 Si5 Cr5.

The graph bars on the material properties cards below compare ASTM A436 type 4 to: cast irons (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Brinell Hardness

180

Elastic (Young's, Tensile) Modulus

180 GPa 26 x 10⁶ psi

Poisson's Ratio

0.3

Shear Modulus

70 GPa 10 x 10⁶ psi

Tensile Strength: Ultimate (UTS)

190 MPa 28 x 10³ psi

Thermal Properties

Latent Heat of Fusion

350 J/g

Melting Completion (Liquidus)

1340 °C 2440 °F

Melting Onset (Solidus)

1290 °C 2360 °F

Specific Heat Capacity

490 J/kg-K 0.12 BTU/lb-°F

Thermal Expansion

13 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

24 % relative

Density

7.7 g/cm³ 480 lb/ft³

Embodied Carbon

4.6 kg CO₂/kg material

Embodied Energy

64 MJ/kg 28 x 10³ BTU/lb

Embodied Water

120 L/kg 15 gal/lb

Common Calculations

PREN (Pitting Resistance)

5.0

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

7.0 points

Strength to Weight: Bending

9.6 points

Thermal Shock Resistance

5.7 points

Alloy Composition

Iron (Fe)Fe		51.8 to 61
Nickel (Ni)Ni		29 to 32
Silicon (Si)Si		5.0 to 6.0
Chromium (Cr)Cr		4.5 to 5.5
Carbon (C)C		0 to 2.6
Manganese (Mn)Mn		0.5 to 1.5
Copper (Cu)Cu		0 to 0.5
Sulfur (S)S		0 to 0.12