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300
300 Maraging Steel Alloy Product Guide
Applications | Specifications | Mechanical and Chemical Data
Overview
Maraging Steel Alloy is a carbon free iron-nickel blend of steel with hint of aluminum, titanium, cobalt, and Molybdenum. It is easily cold worked, forged, and welded. Additionally, maraging steel has good machinability. It is a very high strength, comparatively low weight metal often used in the aerospace industry.
Common Trade Names
AISI Grade 18Ni(300), UNS K93120
Other Resources
Weight Calculator | Mill Test Reports
Products
Applications
- Aerospace
300 Specifications
AMS | MIL |
|---|---|
| 6514 | S46850 |
| Physical Properties 300 | |||||
| Annealed | |||||
|---|---|---|---|---|---|
| Density | 0.289 lb/in3 | ||||
| Ultimate Tensile Strength | 150 ksi | ||||
| Yield Tensile Strength | 110 ksi | ||||
| Shear Modulus | 10,600 ksi | ||||
| Shear Strength | 92 ksi | ||||
| Hardness Rockwell | Brinell | B106 | 294 | ||||
| Elongation at Break Percentage | 18% | ||||
| Reduction of Area | 61.3% | ||||
| Modulus of Elasticity | 27,500 ksi | ||||
| Poisson's Ratio | 0.30 | ||||
| Melting Point | 2,600-2,690 °F | ||||
| Specific Heat | 1.1 x 10^-1 BTU/lb-°F | ||||
| Thermal Conductivity | 176 BTU-in/hr-ft^2-°F | ||||
|
Chemistry Information
|
|
Element |
Percentage |
| Al | 0.1 |
| B | 0.003 max |
| Co | 9 |
| C | 0.03 max |
| Fe | 67 |
| Mn | 0.1 max |
| Mo | 4.8 |
| P | 0.01 max |
| Ni | 18.5 |
| Si | 0.1 max |
| S | 0.01 max |
| Ti | 0.6 |
| Zr | 0.01 |
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