Sep 26 2012
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.