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| Customization: | Available |
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| Type: | Stainless Steel Sheets |
| Standard: | ASTM, AISI, GB, JIS, DIN, EN |
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SUS420J2 is a martensitic stainless steel, utilized in a range of applications that require high strength, high hardness, and corrosion resistance. After heat treatment, there are globalized carbides, and their good hardenability, high wear resistance, corrosion resistance, post-processing, and surface hardening performance are suitable for some demanding mechanical parts, tools, medical devices, and some special industrial applications.
| execution standard | ZEICIN Grade | GB | ASTM | JIS | DIN |
| GB | SUS420J2 | 3Cr13 | S42000/420 | SUS420J2 | X30Cr13/1.4028 |
| C | Cr | Mn | Si | Mo | V |
| 0.26~0.40 | 12.00~14.00 | ≤1.00 | ≤1.00 | - | - |
| Co | S | P | Ni | Nb | W |
| - | ≤0.030 | ≤0.040 | ≤0.60 | - | - |
| Process | Temperature Range | Description |
| Annealing | 840~900ºC | Heat uniformly to the specified temperature and hold until temperature is uniform throughout. Soaking and cooling are required. |
| Heat Treatment | 730~790ºC | Heat uniformly to the specified temperature and hold until temperature is uniform throughout. |
| Hardening | 950~1020ºC | Heat uniformly to the specified temperature and hold until temperature is uniform throughout. Follow with oil quenching or air cooling, then temper slightly warm. |
| Steel Grade | Hard/Finish | Hardness (HV) | Tensile Strength (MPa-N/mm2) | Elongation (%) |
| SUS420J2 | Annealed | 150-200 | 540-655 | 20-30 |
| Full Hard | 280-320 | 880-1030 | 1-3 | |
| Quenching and Tempering | 450-550 | - | - |
Production process
Photo1(Domestic). Carbon carbide size obviously appears big size.
Photo 2 (abroad), the carbide distribution is uneven, and the individual is large. Reason analysis: During the smelting process, the carbide can not be controlled well. In the late forging, although the forging ratio increases, it fails to make up for the defects of the smelting.
Photo3(ZhengDa=Zeicin) the modification of three technological processes of 1)EAF+LF+VD, 2) Special innovation smelting process of RS ESR, 3) transformation forging, so that it is obviously better than the imported ones. The carbide is small and uniform.
Photo 1 (domestic), the carbide individual is obviously large, and the processing will exhibit the phenomenon of detachment.
Photo 2 (abroad), The carbides are superior to domestic ones, but there are more angular carbides, and cracks and stress concentrations are easy to occur in use, leading to early failure.
Photo3(ZhengDa=Zeicin), the modification in the process of smelting and forging, the level of carbide is obviously superior to the imports.
Photo 1 (domestic), Zonal carbides are obvious, the carbide particles are obviously larger than the longitudinal ones, causing analysis: no modification of forging, just rolling directly.
Photo 2 (abroad), the distribution of carbides is not uniform, and the individual is large. Reason analysis: During the smelting process, the carbide can not be controlled well. In the late forging, although the forging ratio increases, it fails to make up for the defects of the smelting.
Photo3(ZhengDa=Zeicin) the modification of three technological processes of 1) EAF +LF+VD, 2) Special innovation smelting process of RS ESR, 3) transformation forging, so that it keeps obviously better than the imported ones. The carbide is small and uniform.
| Type | ZEICIN GRADE | SIMILAR STEEL GRADES | |||
| GB | JIS | ASTM | DIN | ||
| Martensite Stainless Steel | 9Cr18Mo | 9Cr18Mo | SUS440C | AISI 440C | 1.4125 |
| 9Cr18MoV | 9Cr18MoV | SUS440B | AISI 440B | 1.4112 | |
| 11Cr17 | 11Cr17 | SUS440C | AISI 440C | 1.4125 | |
| SUS440A | 68Cr17(7Cr17) | SUS440A | S44002 | 1.4109 | |
| 10Cr15Comav | 10Cr15Comav | VG10 | / | / | |
| 5Cr15MoV | 5Cr15MoV | 420hc | 420MOV | W1.4116(X50CrMoV15) | |
| 7Cr17MoV | 7Cr17MoV | SUS440A/AUS6 | 440A | / | |
| SUS440F | Y108Cr17 (Y11Cr17) | SUS440F | S44020/440F | 1.4025 | |
| SUS420J2 | 3Cr13 | SUS420J2 | S42000/420 | X30Cr13/1.4028 | |
| VG10 | / | VG10 | / | / | |
| BG42 | BG42 | / | / | / | |
| YTG134 | 4Cr13 | SUS420 | 420* | 1.2083 | |
SUS420J2 is able to produce sharp edges and maintain them over time, making it a great choice for barber scissors.
Because of the high hardness and corrosion resistance of SUS420J2, the corrosion raindrops of the body can be prevented, so it is often used for surgical tools, such as a scalpel, tweezers, and so on.
Ideal for wear- and corrosion-resistant automotive parts and aerospace parts.
like gears, bearings, and other high-strength end parts.
Q1: Do you accept trial orders?
A1: Yes, we accept trial orders, provided that the required size and model are in stock.
Q2: What is your delivery time?
A2: If the products are in stock, the delivery time is generally 5-15 days. If the products are out of stock, the delivery time may range from 15-20 days, depending on the order quantity.
Q3: Do you offer discounts for bulk orders?
A3: Yes, we offer discounts for bulk orders. The specific discount will depend on the order quantity and terms of cooperation. Please feel free to contact us for more details.
Q4: What is your product packaging like?
A4: Our products are packaged in standard industrial packaging to ensure safety during transportation. If you have specific packaging requirements, please let us know when placing the order, and we will package your items accordingly.
Q5: What payment methods do you support?
A5: We accept a variety of payment methods, including T/T, L/C, Alipay, PayPal, etc. The specific payment method can be arranged flexibly based on the order amount and customer needs.
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