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Attention to Detail for Accurate Custom Cuts

With the tightest custom cut tolerances of any small quantity US metal supplier, your materials get a 3-point inspection to ensure quality and accuracy before it ships.


1-1/4 inch 18Ni Maraging Steel Alloy 300 Round Bars are made of a carbon free iron-nickel blend of steel with hint of aluminum, titanium, cobalt, and Molybdenum. This composition of metals results in a very high strength, low weight metal often used in the aerospace industry.

The 300 alloy middle grade in comparison to the 250 and 350 alloys due to its medium levels of Cobalt and Titanium.

shape Image

Dimension Name


Diameter 1.25
Max Length 144
Alloy 300
MTR Availability Yes
Material Maraging Steel
Shape Bar-Round
Custom Cut Warehouse 0

Weight/Lineal Foot

4.26 pounds
Please note that this data is to be used ONLY FOR REFERENCE, NOT FOR DESIGN, and by using it,you agree that any decisions you make regarding materials for your project are at your own discretion.

Chemistry Information: 300 Maraging Steel

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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