Maraging Steel
Maraging Steel Product Guide
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, UNS K92890(250), UNS K93120(300/350), UNS K93120(350)
Specifications
AMS
6514, 6512
MIL
S46850
Applications
Mechanical Information
| Physical Properties Maraging Steel | |||||
| 250 | 300 | 350 | |||
|---|---|---|---|---|---|
| Density | 0.290 lb/in3 | 0.289 lb/in3 | 0.292 lb/in3 | ||
| Ultimate Tensile Strength | 140 ksi | 150 ksi | 170 ksi | ||
| Yield Tensile Strength | 96 ksi | 110 ksi | 120 ksi | ||
| Shear Modulus | 10,600 ksi | 10,600 ksi | 11,200 ksi | ||
| Shear Strength | 87 ksi | 92 ksi | 100 ksi | ||
| Hardness Rockwell | Brinell | B105 | 286 | B106 | 294 | B108 | 319 | ||
| Elongation at Break Percentage | 17% | 18% | 18% | ||
| Reduction of Area | 75% | 61.3% | 70% | ||
| Modulus of Elasticity | 27,000 ksi | 27,500 ksi | 29,000 ksi | ||
| Poisson's Ratio | 0.30 | 0.30 | 0.30 | ||
| Melting Point | 2,610-2,690 °F | 2,600-2,690 °F | 2,600-2,680 °F | ||
| Specific Heat | 1.1 x 10^-1 BTU/lb-°F | 1.1 x 10^-1 BTU/lb-°F | 1.1 x 10^-1 BTU/lb-°F | ||
| Thermal Conductivity | 176 BTU-in/hr-ft^2-°F | 176 BTU-in/hr-ft^2-°F | 176 BTU-in/hr-ft^2-°F | ||