Grade 200 Maraging Steel
Grade 200 maraging steel is a maraging steel. It has a very high density among iron alloys. In addition, it has a very low heat capacity and a very high base cost.
The properties of grade 200 maraging steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare grade 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
730 to 1260 MPa 110 to 180 x 103 psi
Elastic (Young's, Tensile) Modulus
190 GPa 28 x 106 psi
Elongation at Break
9.1 to 18 %
Poisson's Ratio
0.3
Rockwell C Hardness
29 to 45
Shear Modulus
74 GPa 11 x 106 psi
Shear Strength
600 to 890 MPa 87 to 130 x 103 psi
Tensile Strength: Ultimate (UTS)
970 to 1500 MPa 140 to 220 x 103 psi
Tensile Strength: Yield (Proof)
690 to 1490 MPa 100 to 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 to 160 MJ/m3
Resilience: Unit (Modulus of Resilience)
1240 to 5740 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
33 to 51 points
Strength to Weight: Bending
27 to 35 points
Thermal Shock Resistance
29 to 45 points
Alloy Composition
| Fe | 67.8 to 71.8 | |
| Ni | 17 to 19 | |
| Co | 8.0 to 9.0 | |
| Mo | 3.0 to 3.5 | |
| Ti | 0.15 to 0.25 | |
| Al | 0.050 to 0.15 | |
| Mn | 0 to 0.1 | |
| Si | 0 to 0.1 | |
| Ca | 0 to 0.050 | |
| C | 0 to 0.030 | |
| Zr | 0 to 0.020 | |
| P | 0 to 0.010 | |
| S | 0 to 0.010 | |
| B | 0 to 0.0030 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
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