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Maraging Steel

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, UNS K92890(250), UNS K93120(300/350), UNS K93120(350)

Other Resources

Weight Calculator | Mill Test Reports

Products

Maraging Round Bar

Applications

Aerospace

Specifications

AMS	MIL
6514	S46850
6512

	250	300	350
Physical Properties Maraging Steel
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