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ภาพรวม
420J2 stainless steel wire is a martensitic stainless steel alloy containing 12–14% chromium, a higher carbon content than standard 420, and added sulfur for improved machinability. It is widely used for cutlery, surgical blades, fasteners, springs, and industrial knife blades. After quenching and tempering, it achieves high hardness (up to 52 HRC) with good wear resistance and moderate corrosion resistance. The "J2" designation (JIS) corresponds to a higher carbon variant comparable to ASTM 420C, not the lower-carbon J1 variant.
ช่วงขนาด
- Dia:0.08 – 12.0mm(0.003 – 0.472in)
- Coil Weight:1 – 200 kg
- Spool ID:100 – 500 mm
- Spool Type:Plastic, wooden, metal
ข้อกำหนดเกรด
| ระบบ | ค่า |
|---|---|
| 🇺🇸 UNS | S42020 |
| 🇯🇵 JIS | SUS 420J2 |
| 🇪🇺 EN | EN 1.4028 / X39Cr13 |
| 🇩🇪 DIN | 1.4028 / X40Cr14 |
| 🇨🇳 GB | 30Cr13 (3Cr13) / 40Cr13 (4Cr13) |
| 🇷🇺 GOST | 20X13 (X20Cr13) / 40X13 (X40Cr13) |
| 🇦🇺 AS | 420 (C420) |
องค์ประกอบทางเคมี
| ธาตุ | ค่า |
|---|---|
| C | 0.26 – 0.40 |
| Si | ≤ 1.00 |
| Mn | ≤ 1.00 |
| P | ≤ 0.040 |
| S | ≤ 0.030 (1.4028: ≤0.015 typically) |
| Cr | 12.0014 |
| Ni | ≤ 0.60 |
| Mo | ≤ 0.30 |
| Cu | ≤ 0.30 |
| Fe | Remainder |
คุณสมบัติเชิงกล
| productCenter.property | ค่า |
|---|---|
| Tensile Strength (MPa) | 540 – 650 |
| Yield Strength (MPa, 0.2% offset) | ≥ 345 |
| Elongation (%) | 20 – 30 |
| Reduction of Area (%) | 50 – 65 |
| Hardness (HB) | ≤ 223 |
| Hardness (HRB) | ≤ 95 |
คุณสมบัติทางกายภาพ
| คุณสมบัติ | หน่วย | ค่า |
|---|---|---|
| Density (g/cm³) | g/cm³ | 7.70 |
| Melting Point (°C) | °C | ~1,450 |
| Melting Range (°C) | °C | 1,370 – 1,480 |
| Modulus of Elasticity (GPa) | GPa | 200 |
| Modulus of Rigidity (GPa) | - | 77 |
| Poisson's Ratio | - | 0.28 |
| Specific Heat (J/kg·K, 25°C) | J/kg·K | 460 |
| Thermal Conductivity (W/m·K, 25°C) | W/m·K | 24.9 |
การใช้งาน
- Cutlery & Kitchenware
- Industrial Blades & Knives
- Springs & Wire Forms
- Fasteners & Hardware
- Precision Engineering
- Petrochemical & Process Equipment
- Firearms & Defense
- Textile & Other