Mechanical Properties
| Tensile Strength (Rm) | Yield Strength (Rp0.2) | Elongation (A5) | Reduction of Area (Z) | Hardness |
| ≥ 600 MPa | ≥ 205 MPa | ≥ 55% | ≥ 50% | ≤ 240 HBW |
Martensitic Stainless Steel Hardened Shafts
416 Stainless Steel Bar Alloy 416 | AISI 416 |UNS S41600
Machining efficiency is a key concern when producing high-volume turned parts. 416 stainless steel offers one of the best free-machining performances among martensitic stainless steel grades, making it well suited for automatic lathe and CNC machining operations.
After heat treatment, 416 can achieve improved strength and hardness while still maintaining good corrosion resistance for many industrial applications. Compared with 304 and 316 stainless steel, 416 offers better cutting performance and a lower friction coefficient, helping customers improve machining efficiency in batch production.
Compass Power Tech manufactures 416 stainless steel precision ground bars for solenoid valves, micro motors, electrical components, automatic lathe parts, CNC machined parts, and other precision components that require a practical balance of machinability, strength, and stainless steel performance.
Chemical Composition (%)
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo |
| 416 (S41600) | ≤ 0.15 | ≤ 1.0 | ≤ 1.25 | ≤ 0.06 | ≥ 0.15 | ≤ 0.60 | 12.0–14.0 | ≤ 0.60 |
Specifications
| Diameter | Tolerance | Roundness | Straightness | Standard Length | Surface Roughness |
| Φ3-Φ25 | 0.1mm/m | g6, h6, f7 | ≤1/2 | 2m 3m | Ra≤0.4 |
| Φ25-Φ40 | 0.1mm/m ≤ | g6, h6, f7 | ≤1/2 | 3m, 6m | Ra≤0.4 |
| Φ40-Φ80 | 0.1mm/m ≤ | g6, h6, f7 | ≤1/2 | 3m, 6m | Ra≤0.4 |
| Φ80-Φ150 | ≤0.05mm/m | g6, h6, f7 | ≤1/2 | 3m, 6m | Ra≤0.4 |
| Φ150-Φ180 | ≤0.05mm/m | g6, h6, f7 | ≤1/2 | 3m, 6m | Ra≤0.4 |
Additional Custom Services
- Cut-to-length service: Shaft length can be customized according to customer assembly requirements.
- End chamfering: Both ends of the shaft can be chamfered to simplify downstream machining and installation.
- Drawing-based machining: Shafts can be machined according to customer drawings and supplied as ready-to-assemble components.
- Surface rolling treatment: Surface rolling can be applied to improve surface hardness when higher wear resistance is required.
Packaging and Storage
To protect stainless steel precision ground shafting during sea freight and storage, Compass Power Tech uses anti-rust paper tube packaging. Before wrapping, anti-rust oil is applied evenly to the shaft surface, and anti-rust wax is applied inside the paper tube. This protection process helps reduce corrosion risk during transportation and ensures customers receive shafts in stable, ready-to-use condition.
Looking for Custom Metal Components for Your Application?
We manufacture precision ground shafts, stainless steel tubing, piston rods and aluminum alloy cylinder tubes for hydraulic, pneumatic, machinery, energy and transportation applications. Contact us for material selection, specifications and customization support.
