Stainless Steel – Grade 410S (UNS S41008)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Annealing
Cold Working
Welding
Machinability
Hardening
Hot Working

Introduction

Stainless steels are high-alloy steels with good corrosion resistance due to large amounts of chromium present in them. Most of the stainless steels contain about 10% of chromium.

Stainless steels are available in three different groups based on their crystalline structure. These groups include martensitic, austenitic and ferritic. The combination of martensitic and ferritic steels forms a fourth group of stainless steels known as precipitation-hardened steels.

Grade 410S stainless steel is a non-heat treatable version of grade 410 stainless steel.

The following datasheet provides an overview of grade 410S stainless steel.

Chemical Composition

The chemical composition of grade 410S stainless steel is outlined in the following table.

Element Content (%)
Iron, Fe 85
Chromium, Cr 12.5
Manganese, Mn 1.0
Silicon, Si 1.0
Carbon, C 0.080
Phosphorous, P 0.040
Sulfur, S 0.030

Physical Properties

The following table shows the physical properties of grade 410S stainless steel.

Properties Metric Imperial
Density 7.80 g/cm3 0.282 lb/in³
Melting point 1532°C 2790°F

Mechanical Properties

The mechanical properties of grade 410S stainless steel are displayed in the following table.

Properties Metric Imperial
Tensile strength 1525 MPa 221200 psi
Yield strength (@strain 0.200%) 1225 MPa 177700 psi
Elastic modulus 190-210 GPa 27557-30458 ksi
Poisson's ratio 0.27-0.30 0.27-0.30
Elongation at break (in 50 mm) 14.50% 14.50%
Hardness, Knoop (converted from Rockwell C hardness) 464 464
Hardness, Rockwell C 45 45
Hardness, Vickers (converted from Rockwell C hardness) 446 446

Thermal Properties

The thermal properties of grade 410S stainless steel are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@0-100°C/32-212°F) 9.90 µm/m°C 5.50 µin/in°F
Thermal conductivity (@100°C/212°F) 24.9 W/mK 173 BTU in/hr.ft².°F

Other Designations

Equivalent materials to grade 410S stainless steel are the following.

ASTM A240 ASTM A473 DIN 1.0400 DIN 1.4001
DIN 1.4034 ASME SA240 ASTM A176 SAE 51410S

Fabrication and Heat Treatment

Annealing

Grade 410S stainless steel is annealed at 649-760°C (1200-1400°F) and then cooled in air.

Cold Working

Commonly used cold working methods are used for grade 410S stainless steel.

Welding

Grade 410S stainless steel can be welded by commonly used welding methods. The workpiece is preheated to 177-204°C (350-400°F) to prevent cracking.

Machinability

Grade 410S stainless steel can be machined in the annealed condition though better results are obtained in heat treated and cold drawn conditions.

Hardening

Grade 410S stainless steel does not respond to hardening by heat treatment.

Hot Working

Grade 410S stainless steel can be hot worked between 1093 and 1204°C (2000 and 2200°F). Hot working below 899°C (1650°F) is not recommended for grade 410S stainless steel.

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