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Aged Grade 200 Maraging Steel

Aged 200 maraging steel is grade 200 maraging steel in the aged (precipitation hardened) condition. The graph bars on the material properties cards below compare aged 200 maraging steel to: maraging steels (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

Compressive (Crushing) Strength

1260 MPa 180 x 103 psi

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Elongation at Break

9.1 %

Fatigue Strength

760 MPa 110 x 103 psi

Fracture Toughness

160 MPa-m1/2 150 x 103 psi-in1/2

Impact Strength: V-Notched Charpy

38 J 28 ft-lb

Poisson's Ratio

0.3

Rockwell C Hardness

45

Shear Modulus

74 GPa 11 x 106 psi

Shear Strength

890 MPa 130 x 103 psi

Tensile Strength: Ultimate (UTS)

1500 MPa 220 x 103 psi

Tensile Strength: Yield (Proof)

1490 MPa 220 x 103 psi

Thermal Properties

Latent Heat of Fusion

260 J/g

Melting Completion (Liquidus)

1460 °C 2660 °F

Melting Onset (Solidus)

1420 °C 2580 °F

Specific Heat Capacity

460 J/kg-K 0.11 BTU/lb-°F

Thermal Expansion

12 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

31 % relative

Density

8.2 g/cm3 510 lb/ft3

Embodied Carbon

4.5 kg CO2/kg material

Embodied Energy

59 MJ/kg 26 x 103 BTU/lb

Embodied Water

140 L/kg 16 gal/lb

Common Calculations

PREN (Pitting Resistance)

11

Resilience: Ultimate (Unit Rupture Work)

140 MJ/m3

Resilience: Unit (Modulus of Resilience)

5740 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

23 points

Strength to Weight: Axial

51 points

Strength to Weight: Bending

35 points

Thermal Shock Resistance

45 points

Alloy Composition

Iron (Fe)Fe 67.8 to 71.8
Nickel (Ni)Ni 17 to 19
Cobalt (Co)Co 8.0 to 9.0
Molybdenum (Mo)Mo 3.0 to 3.5
Titanium (Ti)Ti 0.15 to 0.25
Aluminum (Al)Al 0.050 to 0.15
Manganese (Mn)Mn 0 to 0.1
Silicon (Si)Si 0 to 0.1
Calcium (Ca)Ca 0 to 0.050
Carbon (C)C 0 to 0.030
Zirconium (Zr)Zr 0 to 0.020
Phosphorus (P)P 0 to 0.010
Sulfur (S)S 0 to 0.010
Boron (B)B 0 to 0.0030

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

Followup Questions

How are the material properties defined?How do I compare this exact variant to another material?

Further Reading

MIL-S-46850D: Steel: Bar, Plate, Sheet, Strip, Forgings, and Extrusions, 18 Percent Nickel Alloy, Maraging, 200 KSI, 250 KSI, 300 KSI, and 350 KSI, High Quality

Maraging Steels: Modelling of Microstructure, Properties and Applications, Wei Sha and Zhanli Guo, 2009

Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993