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Aisi 316 Stainless Steel Sheet
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AISI 316 stainless steel sheet is a widely used austenitic stainless steel known for its excellent corrosion resistance, especially in chloride environments, due to the addition of molybdenum (Mo). It is widely applied in marine, chemical, and industrial engineering fields.
In global trade and engineering, 316 stainless steel is defined under different international standards such as AISI, ASTM, and JIS. Understanding these systems is essential for correct material selection and procurement.
1. What is AISI 316 Stainless Steel?
Type: Austenitic stainless steel
Chromium (Cr): 16–18%
Nickel (Ni): 10–14%
Molybdenum (Mo): 2–3%
Key Properties
- Excellent corrosion resistance (marine & chemical environments)
- Good weldability and formability
- High temperature resistance
2. Overview of Major Standards
Different regions use different naming systems for the same stainless steel grade.
| Standard System | Organization | 316 Name |
|---|---|---|
| AISI | American Iron and Steel Institute | 316 |
| ASTM | American Society for Testing and Materials | 316 / 316L |
| JIS | Japanese Industrial Standards | SUS316 |
| EN | European Standard | 1.4401 |
3. AISI vs ASTM vs JIS Differences
AISI Standard
Focuses on grade naming and chemical composition only. It does not define mechanical properties or testing methods.
ASTM Standard
A full engineering specification covering composition, mechanical properties, heat treatment, and testing methods.
JIS Standard
Japanese standard system with slightly different composition ranges and testing methods.
4. Chemical Composition Comparison
| Element | AISI 316 | JIS SUS316 | EN 1.4401 |
|---|---|---|---|
| Cr | 16–18% | 16–18% | 16.5–18.5% |
| Ni | 10–14% | 10–14% | 10–13% |
| Mo | 2–3% | 2–3% | 2–2.5% |
| C | ≤0.08% | ≤0.08% | ≤0.07% |
5. 316 vs 316L Stainless Steel
| Grade | Carbon | Feature |
|---|---|---|
| 316 | ≤0.08% | Standard grade |
| 316L | ≤0.03% | Better welding performance |
6. Thickness & Supply Range
Typical supply range of 316 stainless steel sheets includes cold rolled, hot rolled, and heavy plates.
| Type | Thickness |
|---|---|
| Cold Rolled Sheet | 0.3 – 3 mm |
| Hot Rolled Plate | 3 – 50 mm |
| Heavy Plate | 50 mm+ |
7. How to Choose the Right Standard
For international projects → ASTM is recommended. For identification → AISI is commonly used. For Asian markets → JIS is preferred.
In practice, full specification is often written as ASTM A240 Type 316 Stainless Steel Sheet. You can also view related products here: stainless steel sheet
8. FAQ (Frequently Asked Questions)
Q1: What is the main difference between AISI 316 and ASTM 316?
AISI defines only grade names, while ASTM provides full engineering specifications including testing and mechanical properties.
Q2: Is SUS316 the same as 316 stainless steel?
Yes, SUS316 is the JIS Japanese equivalent of AISI 316 stainless steel with very similar composition.
Q3: Why is 316L better for welding?
316L has lower carbon content, which reduces carbide precipitation during welding and improves corrosion resistance.
Q4: Which standard should I use for international procurement?
ASTM standards are most widely accepted in international trade and engineering contracts.
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