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Introduction
Stainless steels are high-alloy steels. They have high corrosion resistance compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are further divided into three types such as ferritic, austenitic, and martensitic steels. Another group of stainless steels are precipitation-hardened steels, a combination of martensitic and austenitic steels.
The following datasheet gives an overview of grade 436 stainless steel.
The chemical composition of grade 436 stainless steel is outlined in the following table.
| Element | Content (%) |
|---|---|
| Iron, Fe | 81.3 |
| Chromium, Cr | 16 |
| Molybdenum, Mo | 1 |
| Manganese, Mn | 1 |
| Niobium, Nb + Tantalum, Ta | 0.5 |
| Carbon, C | 0.12 |
| Phosphorous, P | 0.040 |
| Sulfur, S | 0.030 |
The following table shows the physical properties of grade 436 stainless steel.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.80 cm³ | 0.282 lb/in³ |
The mechanical properties of annealed grade 436 stainless steel are given in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 538 MPa | 78000 psi |
| Yield strength | 441 MPa | 64000 psi |
| Elastic modulus | 200 GPa | 29008 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break | 32% | 32% |
| Reduction of area | 77% | 77% |
| Hardness, Rockwell B | 89 | 89 |
The thermal properties of grade 436 stainless steel are highlighted 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 |
Other designations that are equivalent to grade 436 stainless steel include:
SAE 51436
SAE J405 (51436)
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