Characteristics of Kobe Steel’s Steel Casting and Forging / Steel Powder
Characteristics of Steel Casting and Forging
Steel is the most familiar and versatile metal on Earth, offering excellent workability and recyclability to suit various shapes and applications. It possesses a unique combination of softness and strength, and by adjusting alloying elements or refining manufacturing methods, its strength can be fine-tuned across a broader range than other metals. Some types, like stainless steel, also offer exceptional corrosion resistance.It is also an environmentally friendly raw material that can be recycled almost infinitely.
Steel Casting and Forging: Manufacturing lineup (steel grades)
| Steel grade | Typical alloy composition Wt% |
Mechanical properties (typical values, ranges) | Applicable products and applications | |||
|---|---|---|---|---|---|---|
| Kobe Steel grade name | Similar or equivalent official standards | Tensile strength |
Elongation | Hardness | ||
| MPa | ％ | HBW | ||||
| S45C | JIS S45C | 0.45C | 570～ | 17～ | 137-269 | Machine structural components and related parts |
| SCM440 | JIS SCM440 | 0.4C-1Cr-0.25Mo | 980～ | 12～ | 258-352 | Machine structural components and related parts |
| SNCM431 | JIS SNCM431 | 0.31C-1.8Ni-0.8Cr-0.25Mo | 830～ | 20～ | 248-302 | Impeller materials and related components |
| SACM645 | JIS SACM645 | 0.45C-1.5Cr-0.25Mo-1Al | 830～ | 15～ | 214-302 | Cylinders (barrels), liners, and related components |
| KTH4 | JIS SKT4 | 0.55C-1.7Ni-1Cr-0.4Mo-0.1V | 1340～ | ～15 | 390～ | Hot-working dies and related tooling |
| SKD61 | JIS SKD61 | 0.4C-5Cr-1.3Mo-1V | 1760～ | ～10 | 480～ | Hot-working dies and related tooling |
| SUS304 | JIS SUS304 | 8Ni-18Cr | 520～ | 40～ | ～187 | Chemical processing equipment, and components and materials for nuclear power applications |
| SUS630 | JIS SUS630 | 4Ni-17Cr-4Cu-0.3Nb | 930～ | 16～ | 277～ | Impeller materials and related components |
| KES329 | JIS SUS329J1 | 25Cr-4Ni-2Mo | 590～ | 18～ | ～277 | Various heat exchangers, piping, and related components (manufactured for specific customers) |
| SUP13 | JIS SUP13 | 0.6C-0.8Cr-0.3Mo | 1230～ | 10～ | 363-429 | Heavy-duty springs and similar products |
| SUJ2 | JIS SUJ2 | 1C-1.5Cr | 1570-1960 | ～0.5 | 650-740 | Bearings and related components |
| 40CrMo8 | DIN/EN 34CrNiMo6 | 0.4C-2Cr-0.25Mo | 800-950 | 13～ | － | Crankshafts ★Proprietary steel developed in-house |
| 40CrMo8 | KSFA900-M | 0.4C-2Cr-0.25Mo | 880～ | 9～ | 260-320 | High-strength intermediate shaft ★Proprietary steel developed in-house |
| KOW5AR | － | 5Cr-V | － | － | － | Work rolls for cold strip mill ★Proprietary steel developed in-house |
- *Although the steel grade names match JIS designations, they represent equivalent materials and are not JIS-certified steels, as Acme is not a JIS-accredited facility.
- *The mechanical properties listed above may vary depending on heat treatment conditions.
Characteristics of Steel Powder
- High-purity iron powder offers excellent compressibility, making it suitable for a wide range of powder metallurgy applications.
- Irregular particle shapes provide superior formability.
- Available in a broad lineup of grades to meet various needs, including powder metallurgy, environmental applications, welding rods, deoxidizers, and magnetic materials.
- Consistent, stable quality.
Features of Steel Powder
| High purity | Low inclusion content makes the powder well-suited for a wide range of powder metallurgy applications, including powder-forged products. |
|---|---|
| Excellent compressibility | Enables easy manufacturing of large parts with high density and strength. |
| Good formability | The irregular particle shapes contribute to superior compact strength, helping to reduce chipping and cracking of green compacts. |
| Wide range of grades | A broad selection of grades is available to match the requirements of each application. |
| Consistent stable quality | Kobe Steel delivers top-quality steel powders through advanced production technology and rigorous quality control. |
Grade
| Application | Grade | Features |
|---|---|---|
| Powder metallurgy applications | Pure Iron Powder | Offers excellent compressibility for achieving high-density compacts. Its high apparent density and good flowability allow for rapid die filling. |
| Free-Cutting Steel Powder | Enables the production of high-density compacts with excellent machineability without sacrificing compressibility. | |
| Low-Alloy Steel Powder | A high-strength, low-alloy steel powder with excellent compressibility. Provides stable heat-treatability and a uniform microstructure. |
|
| Magnetic applications | MAGMEL™ | Low impurity content and good compressibility result in excellent magnetic properties. |
| Environmental applications | ECOMEL™ | Utilizes surface chemical reactions to absorb various heavy metals and break down volatile organic compounds (VOC). |
| Other applications |
ATOMEL™ | Used for welding rods, chemical reactions, deoxidizers, and body warmers High purity and minimal variation in composition ensure strong reactivity and sustained performance across diverse applications. |
To meet customer needs for improved working environments and reduced labor, Kobe Steel developed a proprietary method for producing uniform mixed steel powder by bonding easily segregated graphite powder directly onto steel powder particles,marketed under the name SEGLESS™
This approach minimizes variation in carbon content in green compacts, while also reducing fluctuations in apparent density and dimensional change rate—resulting in improved overall productivity.
(For powder metallurgy applications)
Contact Us
You can reach us by clicking the inquiry button.