Product Details
I. Basic Material
II. Chemical Composition of Substrate (Mass Fraction wt%)
III. Mechanical Properties
IV. Processing Technology & Surface Roughness
V. Coating & Physical Properties
VI. Application Scenarios
Marine environments, chemical corrosion-resistant equipment, medical and food machinery, high-end hydraulic piston rods, anti-corrosion valve stems, precision guide shafts used in humid and high-salt working conditions, automated anti-corrosion transmission components.
| Item | Mechanical Properties |
| Substrate Grade | 316L |
| National Standard Grade | 022Cr17Ni12Mo2 |
| Surface Treatment | Chrome Plated |
| Chrome Plated Coating Thickness | Diameter ≤φ20: 15μm; Diameter ＞φ20: 20μm, thickness customizable as required |
| Surface Hardness after Chrome Plated | HV800～1100 |
| Common Diameter Range | φ3.0mm～φ300mm |
| Diameter Tolerance | Conventional: h8, h9; High Precision: h7, f7, g6, h6 |
| Roundness | ≤1/2 diameter tolerance |
| Straightness | ≤0.10mm/1000mm |
| Standard Length | Fixed length of 3 meters for φ40mm and below; fixed length of 6 meters for above φ40mm, customized fixed lengths available for large specifications |
| End Face Requirements | Flat end, chamfered and deburred |
II. Chemical Composition of Substrate (Mass Fraction wt%)
| C | Si | Mn | P | S | Cr | Ni | Mo |
| ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.00～18.50 | 10.00～14.00 | 2.00～3.00 |
III. Mechanical Properties
| Item | Index Requirements |
| Tensile Strength Rm | ≥485 MPa |
| Yield Strength Rp0.2 | ≥175 MPa |
| Elongation after Fracture A | ≥40% |
| Substrate Hardness | ≤187 HB |
IV. Processing Technology & Surface Roughness
| Process Type | Complete Process Flow | Surface Roughness |
| Process 1 | Hot-rolled substrate → Precision drawing → Centerless precision grinding → Polishing → Chrome Plated → Polishing | Ra ≤0.2μm |
| Process 2 | Hot-rolled substrate → Peeling and straightening → Centerless precision grinding → Polishing → Chrome Plated → Polishing | Ra ≤0.2μm |
| Process 3 | Forged round bar → Turning finishing → Centerless precision grinding → Polishing → Chrome Plated → Polishing | Ra ≤0.2μm |
V. Coating & Physical Properties
| Item | Parameter Description |
| Coating Adhesion | No peeling or flaking, qualified in bending resistance test |
| Corrosion Resistance | Resistant to acid, alkali, seawater and moisture; upgraded dual anti-corrosion performance |
| Coefficient of Friction | Low friction coefficient, high wear resistance and scratch resistance |
| Magnetism of Substrate | Non-magnetic |
VI. Application Scenarios
Marine environments, chemical corrosion-resistant equipment, medical and food machinery, high-end hydraulic piston rods, anti-corrosion valve stems, precision guide shafts used in humid and high-salt working conditions, automated anti-corrosion transmission components.
