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  • Alloy
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

300 Round Bar

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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