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ASTM A182 Grade F5 (K41545) Steel

ASTM A182 grade F5 is an alloy steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. F5 is the ASTM designation for this material. K41545 is the UNS number.

It has a fairly high electrical conductivity among wrought alloy steels in the same category. In addition, it has a moderately high base cost and a moderately high embodied energy.

The graph bars on the material properties cards below compare ASTM A182 grade F5 to: wrought alloy steels in the same category (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

190 GPa 28 x 106 psi

Elongation at Break

22 %

Fatigue Strength

220 MPa 32 x 103 psi

Poisson's Ratio

0.29

Reduction in Area

40 %

Shear Modulus

74 GPa 11 x 106 psi

Shear Strength

340 MPa 50 x 103 psi

Tensile Strength: Ultimate (UTS)

540 MPa 79 x 103 psi

Tensile Strength: Yield (Proof)

310 MPa 45 x 103 psi

Thermal Properties

Latent Heat of Fusion

260 J/g

Maximum Temperature: Mechanical

510 °C 950 °F

Melting Completion (Liquidus)

1460 °C 2660 °F

Melting Onset (Solidus)

1420 °C 2590 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

40 W/m-K 23 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

8.1 % IACS

Electrical Conductivity: Equal Weight (Specific)

9.4 % IACS

Otherwise Unclassified Properties

Base Metal Price

4.5 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

1.8 kg CO2/kg material

Embodied Energy

24 MJ/kg 10 x 103 BTU/lb

Embodied Water

69 L/kg 8.2 gal/lb

Common Calculations

PREN (Pitting Resistance)

6.8

Resilience: Ultimate (Unit Rupture Work)

100 MJ/m3

Resilience: Unit (Modulus of Resilience)

260 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

19 points

Strength to Weight: Bending

19 points

Thermal Diffusivity

11 mm2/s

Thermal Shock Resistance

15 points

Alloy Composition

Among alloy steels, the composition of ASTM A182 grade F5 is notable for containing a comparatively high amount of chromium (Cr). Chromium is used to improve corrosion resistance and most mechanical properties (particularly at higher temperatures).

Iron (Fe) 91.5 to 95.3
Chromium (Cr) 4.0 to 6.0
Molybdenum (Mo) 0.44 to 0.65
Manganese (Mn) 0.3 to 0.6
Silicon (Si) 0 to 0.5
Nickel (Ni) 0 to 0.5
Carbon (C) 0 to 0.15
Phosphorus (P) 0 to 0.030
Sulfur (S) 0 to 0.030

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM A182: Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service