416 Stainless Steel Round Bar (UNS S41600)
416 Stainless Steel Round Bar is a free-machining martensitic stainless steel specifically engineered for excellent machinability with moderate corrosion resistance. Identified by UNS S41600, this grade contains added sulfur, enabling faster machining speeds and superior surface finish compared to standard martensitic grades like 410.
It is widely used in high-volume machining applications where corrosion resistance requirements are moderate and productivity is critical.
Key Features
- Outstanding machinability among martensitic stainless steels
- Good corrosion resistance in mildly corrosive environments
- Can be hardened by heat treatment for higher strength
- Excellent surface finish after machining
- Magnetic in all conditions
- Cost-effective for precision-machined components
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | S41600 |
| AISI | 416 |
| EN | 1.4005 |
| DIN | X12CrS13 |
| JIS | SUS 416 |
Sizes
- Diameter: 6 mm to 400 mm
- Length: 3 m, 6 m, or cut-to-length
- Tolerance: H8 / H9 / H11 or as specified
416 Stainless Steel Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.15 |
| Chromium (Cr) | 12.0 – 14.0 |
| Sulfur (S) | 0.15 – 0.35 |
| Nickel (Ni) | ≤ 0.60 |
| Manganese (Mn) | ≤ 1.25 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.060 |
UNS S41600 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 620 – 860 MPa |
| Yield Strength (0.2%) | ≥ 415 MPa |
| Elongation | ≥ 12% |
| Hardness | 35 – 45 HRC (depending on heat treatment) |
SS 416 Physical Properties
| Property | Value |
|---|---|
| Density | 7.75 g/cm³ |
| Melting Point | 1480 – 1530°C |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 24 W/m·K |
| Electrical Resistivity | 0.57 µΩ·m |
Types of 416 Stainless Steel Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Bright Bar
- Centerless Ground Bar
- Heat-Treated Round Bar
Applications
- High-speed machined components
- Shafts, pins, and spindles
- Gears and bushings
- Valve components
- Automotive and industrial fasteners
- Precision engineering parts
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