Sep 26 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Introduction
Stainless steels are high-alloy steels that possess good corrosion
resistance in comparison with other steels because they contain more
chromium.
Based on their crystalline structure, stainless steels are divided
into three groups, namely, martensitic, austenitic and ferritic. A
combination of martensitic and ferritic steels forms a fourth group
known as precipitation-hardened steels.
The following datasheet provides an overview of grade 414 stainless
steel.
Chemical Composition
The chemical composition of grade 414 stainless steel is outlined in
the following table.
| Element |
Content
(%) |
| Iron, Fe |
83.4 |
| Chromium, Cr |
12.5 |
| Nickel, Ni |
1.88 |
| Manganese, Mn |
1.0 |
| Silicon, Si |
1.0 |
| Carbon, C |
0.15 |
| Phosphorous, P |
0.040 |
| Sulfur, S |
0.030 |
Physical Properties
The following table shows the physical properties of grade 414
stainless steel.
| Properties |
Metric |
Imperial |
| Density |
7.80 g/cm3 |
0.282 lb/in³ |
Mechanical Properties
The mechanical properties of grade 414 stainless steel are displayed
in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
1795 MPa |
260300 psi |
| Yield strength (@strain 0.200%) |
1013 MPa |
146900 psi |
| Elastic modulus |
200 GPa |
29000 ksi |
| Poisson's ratio |
0.27-0.30 |
0.27-0.30 |
| Elongation at break (in 50 mm) |
15% |
15% |
| Izod Impact (hardened and tempered) |
30-80 J |
22.1-59 ft.lb |
| Hardness, Brinell (converted from
Rockwell C hardness) |
459 |
459 |
| Hardness, Knoop (converted from
Rockwell C hardness) |
506 |
506 |
| Hardness, Rockwell C (before
testing) |
48 |
48 |
| Hardness, Vickers (converted from
Rockwell C hardness) |
487 |
487 |
Thermal Properties
The thermal properties of grade 414 stainless steel are given in the
following table.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient
(@0-100°C/32-212°F) |
10.4 µm/m°C |
5.78 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 414 stainless steel are:
- AMS 5615
- ASTM A276
- ASTM A314
- ASTM A473
- ASTM A511
- ASTM A580
- FED QQ-S-763
- SAE 51414
- SAE J405 (51414)