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List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Stainless Steel 321

Stainless Steel 321

Stainless Steel 321 has similar composition to 304 Stainless Steels but with addition of Titanium. This alloy has excellent resistance to corrosion and is also ideal for high temperature environments.

Stainless Steel 321 is also known as AISI 321, Nirosta 4541, Polarit 731, and Remanit 4541.

Available in all profile options

Stainless Steel 321 - Alloy Wire International 1

Key Features

Stainless Steel 321 offers the following key features:

Corrosion resistant

Typical Applications

Stainless Steel 321 is known to be suitable for the following applications:

Aircraft locking wire
General locking wire


Designations

W.Nr. 1.4541
UNS S32100
AWS 133

Specifications

ASTM A313
ASTM A240
ASTM A479
BS EN 10088-3:2014

Chemical Composition

The chemical composition of Stainless Steel 321 is indicated in the table below:

ElementMin %Max %
C0.08
Mn2.00
P0.04
S0.03
Si0.401.00
Cr17.0019.00
Ni9.5012.00
N0.10
Mo0.50
Ti5 x C0.70
FeBAL

Alloy Details

Stainless Steel 321 density, melting point, coefficient of expansion, modulus of rigidity, and elasticity is indicated in the table below:

DensityMelting PointCoefficient of ExpansionModulus of RigidityModulus of Elasticity
8.03 g/cm³1370 °C16.6 μm/m °C (20 – 100 °C)78 kN/mm²187.5 kN/mm²
0.29 lb/in³2500 °F9.2 x 10-6 in/in °F (70 – 212 °F)11300 ksi28000 ksi

Alloy specification

Condition as supplied by Alloy WireTypeTemperatureTimeCooling
Annealed or Spring TemperStress Relieve
450 °C (840 °F)1 HrAir

Properties

The typical mechanical properties of Stainless Steel 321:

Annealed
Approx. tensile strength<800 N/mm²<116 ksi
Approx. operating temperature-200 to +300 °C-330 to +570 °F
Spring Temper
Approx. tensile strength1300 – 2200 N/mm²189 – 319 ksi
Approx. operating temperature-200 to +300 °C-330 to +570 °F

The above tensile strength ranges are typical. If you require different please ask.