Maraging 350 Alloy Steel (UNS S35000)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations

Introduction

Alloy steels are designated by AISI four-digit numbers. They comprise different kinds of steels having composition exceeding the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va set for carbon steels. They quickly respond to mechanical and heat treatments than the carbon steels.

The following datasheet gives an overview of maraging 350 alloy steel.

Chemical Composition

The following table shows the chemical composition of maraging 350 alloy steel.

Element Content (%)
Iron, Fe 63
Nickel, Ni Balance
Cobalt, Co 12
Molybdenum, Mo 4.8
Titanium, Ti 1.4
Aluminum, Al 0.1
Manganese, Mn ≤ 0.10
Silicon, Si ≤ 0.10
Carbon, C ≤ 0.030
Sulfur, S ≤ 0.010
Phosphorous, P ≤ 0.010
Zirconium, Zr 0.01
Boron, B 0.003

Physical Properties

The physical properties of maraging 350 alloy steel are listed in the following table.

Properties Metric Imperial
Density 8.08 g/cc 0.292 lb/in³

Mechanical Properties

The mechanical properties of annealed maraging 350 alloy steel are outlined in the following table.

Properties Metric Imperial
Tensile strength 1140 MPa 165000 psi
Yield strength (@ strain 0.200%) 827 MPa 120000 psi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (estimated from elastic modulus) 77 GPa 11200 ksi
Elastic modulus 200 GPa 29000 ksi
Poisson's ratio 0.3 0.3
Elongation at break (in gage length 4.5 times the square root of the area) 18% 18%
Reduction of area 70% 70%

Thermal Properties

The thermal properties of maraging 350 alloy steel are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@ 21-480°C/69.8-896°F) 11.3 µm/m°C 6.28 µin/in°F
Thermal conductivity (@20°C) 25.3 W/mK 176 BTU in/hr.ft².°F

Other Designations

Other designations that are equivalent to maraging 350 alloy steel include:

  • DIN 1.6355
  • DIN 1.6356

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Submit