Mechanical Grade Stainless Steels
X30Cr13 – 1.4028 / SUS420J2 / Z30Cr13 / 420S45 / 3H13 / 17023 / 30KH13
X30Cr13 – 1.4028 stainless steel belongs to the group of martensitic stainless steels and is widely used in applications requiring high hardness, wear resistance, and cutting performance. Commonly known as AISI 420J2, this grade is one of the higher carbon variants within the 420 series, enabling it to achieve greater hardness levels compared to lower carbon grades.
The chemical composition typically includes approximately 12–14% chromium and 0.26–0.35% carbon. Chromium provides a certain level of corrosion resistance, while the increased carbon content significantly enhances the material’s hardenability. Compared to X20Cr13 (420J1), the higher carbon content gives X30Cr13 superior hardness and improved wear resistance, although this may slightly reduce ductility.
One of the key advantages of X30Cr13 stainless steel is its ability to achieve high hardness through heat treatment. By applying hardening and tempering processes, the material can be optimized to deliver both strength and controlled toughness. This makes it particularly suitable for cutting and piercing tools.
From a mechanical standpoint, this grade offers high strength and excellent wear resistance. Its machinability is acceptable, and it can be shaped through processes such as turning, milling, and grinding. However, its weldability is limited and is generally avoided except for specialized applications.
In terms of corrosion resistance, it is lower than that of austenitic stainless steels, but with proper maintenance and surface finishing, it can perform adequately in humid environments. Its polishable surface also makes it suitable for certain decorative applications.
Overall, X30Cr13 – 1.4028 (AISI 420J2) stainless steel is a reliable engineering material, particularly suited for applications where hardness and cutting performance are critical.
Main Application Areas
- Knife and cutting tool manufacturing
- Standard surgical and medical instruments
- Scissors and cutting equipment
- Shafts, spindles, and mechanical components
- Pump and valve parts
- Wear-resistant machine components
- Hand tools and industrial equipment
- Durable components in the automotive industry
- Decorative and technical metal products
Thanks to these properties, X30Cr13 – 1.4028 stainless steel is widely preferred in applications requiring high hardness and cutting performance, making it an important material in various engineering and industrial sectors.
General Identity
X30Cr13 – 1.4028
| Grade | X30Cr13 |
| Number | 1.4028 |
| Classification | Martensitic Stainless Steel |
Equivalent Grades
X30Cr13 – 1.4028
| EU – EN | X12Cr13 |
| USA | 410 |
| Germany, DIN,WNr | X30Cr13 |
| Japan, JIS | SUS420J2 |
| France, AFNOR | Z30Cr13 |
| England, BS | 420S45 |
| taly, UNI | X30Cr13 |
| China, GB | 3Cr13 |
| Sweden, SS | 2304 |
| Poland, PN | 3H13 |
Standards
X30Cr13 – 1.4028
| Standard 1 | EN 10088-2: 2005 |
| Standard 2 | EN 10088-3: 2005 |
| Standard 3 | EN 10151: 2003 |
| Standard 4 | EN 10250-4: 2000 |
| Standard 5 | EN 10088-1: 2005 |
Chemical Composition
X30Cr13 – 1.4028
| C | 0.26 – 0.35 |
| Si | max 1.00 |
| Mn | max 1.50 |
| P | max 0.040 |
| S | max 0.015 |
| Cr | 12 – 14 |
Mechanical Properties
X30Cr13 – 1.4028
| Rm – Tensile strength (MPa) (+QT800) | 800 – 1000 |
| Rp0.2 0.2% proof strength (MPa) +QT800 | 600 – 650 |
| KV – Impact energy (J) longitud., | +20° – 15 |
| A – Min. elongation at fracture (%) (+QT800) | 10 |
| Vickers hardness (HV): (+A) | 190 – 240 |
| Vickers hardness (HV):(+QT) | 500 – 540 |
| Brinell hardness (HB): (+A) | 245 |
