1. Overview
美国钢铁协会 420 不锈钢, also known as 3Cr13 或者 SUS420J2, is a martensitic stainless steel containing about 13% 铬.
It offers an excellent combination of 硬度, 耐磨性, and corrosion resistance after appropriate heat treatment, making it a preferred material for cutting tools, blades, and mechanical wear parts.
Cgood Steel manufactures 美国钢铁协会 420 不锈钢带材 在 cold rolled annealed 和 硬化的 & 锻炼过的 conditions, with polished or bright finishes to meet the highest precision standards.
2. Chemical Composition and Equivalent Grades
| 标准 | Equivalent Grades | C (%) | 锰 (%) | 和 (%) | 铬 (%) | 在 (%) | P max | S max |
|---|---|---|---|---|---|---|---|---|
| 从 | 3Cr13 | 0.25鈥?.35 | 鈮?.50 | 鈮?.00 | 12.0鈥?4.0 | 鈥?/td> | 鈮?.035 | 鈮?.035 |
| 美国钢铁协会 | 420 | 鈥?/td> | 鈥?/td> | 鈥?/td> | 鈥?/td> | 鈥?/td> | 鈥?/td> | 鈥?/td> |
| 他 | SUS420J2 | 鈥?/td> | 鈥?/td> | 鈥?/td> | 鈥?/td> | 鈥?/td> | 鈥?/td> | 鈥?/td> |
The relatively high chromium content provides good corrosion resistance, while the moderate carbon level ensures the ability to achieve high hardness (up to 50鈥?2 HRC) after quenching and tempering.
3. Manufacturing and Processing
Cgood Steel employs a full range of processing steps to ensure the highest quality surface finish and dimensional accuracy:
- Raw Material Selection:
Only ISO-certified hot rolled coils are used as the starting material. - Acid Pickling:
Removes oxides and surface impurities for uniform rolling. - Cold Rolling:
Reduces thickness with precise tolerance control. - Annealing:
Conducted in a controlled atmosphere to prevent decarburization and achieve a bright surface. - Hardening and Tempering:
- Hardening temperature: 980鈥?050掳C
- Tempering temperature: 150鈥?70掳C
- Results in high hardness with retained corrosion resistance.
- Surface Finishing and Edge Treatment:
Available finishes include 明亮的, 抛光的, or mirror, and edges can be slit, rounded, or square.
4. 机械性能
| Condition | 硬度 | 抗拉强度 | Surface Finish | Edge Type |
|---|---|---|---|---|
| 退火 | 鈮?00 高压 | 600鈥?00 N/mm虏 | 明亮的 / Mirror | 狭缝 / Mill |
| 硬化 & 历练 | 40鈥?2 HRC | 1300鈥?600 N/mm虏 | 抛光 / 明亮的 | 圆形 / 正方形 |
厚度范围: 0.1鈥?.0 毫米
Width Range: up to 500 毫米
5. Key Characteristics
- Corrosion Resistance:
Excellent in dry air, freshwater, mild acids, and alkalis. - Hardness and Wear Resistance:
High hardness achievable after quenching; ideal for cutting edges and mechanical wear parts. - Polishability:
Smooth, 明亮的, and mirror surface finish possible for decorative or precision applications. - Machinability:
Good machinability in annealed condition; easy to harden for final performance. - Dimensional Accuracy:
Maintained through precision cold rolling and levelling.
6. 典型应用
美国钢铁协会 420 stainless steel strip is widely used across various industries that require both mechanical strength 和 surface durability:
- Cutting Tools & Blades:
Knife blades, trowel blades, 刮刀, 油腻的刀, and scissors. - 工业零部件:
Wear-resistant spacers, shims, washers, and clips. - Automotive Applications:
Seatbelt parts, clutch discs, and decorative trims. - Shoe Hardware & Accessories:
Toe caps, shoe shanks, and insole supports.
7. Quality Control and Standards
Cgood Steel follows strict quality assurance procedures throughout production:
- Chemical Composition Testing 鈥?confirmed via spectrometer.
- Hardness Testing 鈥?Vickers, Rockwell, and Brinell methods.
- Flatness and Straightness 鈥?controlled within tolerance classes R1鈥揜4.
- Surface Inspection 鈥?mirror and polished surfaces free from oxidation or pitting.
厚度公差: 卤0.015鈥?.070 毫米
宽度公差: 卤0.20鈥?.80 毫米
8. Packaging and Delivery
Each coil is:
- Lightly oiled to prevent corrosion,
- Wrapped in plastic film and anti-rust paper,
- Packed in wooden pallets or steel frames for export,
ensuring safe arrival in perfect condition.
9. 关于西古德钢铁
Guangzhou Jiaxiao Material Technology Co., 有限公司.
specializes in high carbon steel, alloy steel, and stainless steel strips for global industrial use.
With advanced rolling, annealing, and polishing facilities covering 25,000 m虏 and over 100 skilled staff, Cgood Steel provides reliable, high-quality steel materials for manufacturers in the tooling, automotive, and hardware sectors.
Annual production capacity exceeds 15,000 tons.
