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T: +86-0731-85185770
E: enquiry@qilumetal.com
E: enquiry@qilumetal.com
No. 18 Xiangfu Middle Road,Yuhua District, Changsha City
 |
| Quantity: | |
|---|---|
HS6-5-4
Qilu
Country | ISO | Germany | Japan |
Standard | ISO 4957 | DIN 10027-2 | JIS G4403 |
Grade | HS6-5-4 | 1.3351 | SKH54 |
2: Chemical composition
Grade | C | Si | Mn | Cr | P | S | Mo | V | W |
| HS6-5-4/1.3351 | 1.25-1.40 | 0.45 Max | 0.40 Max | 3.80-4.50 | 0.030 Max | 0.030 Max | 4.20-5.00 | 3.70-4.20 | 5.20-6.00 |
| SKH54 | 1.25-1.40 | 0.45 Max | 0.40 Max | 3.80-4.50 | 0.030 Max | 0.030 Max | 4.20-5.00 | 3.70-4.20 | 5.20-6.00 |
3: Surface hardness and hardenability
Heat Treatment | Hardness |
Annealed (+A) | HB269Max |
| Hardening and Tempering (+HT) | HRC64 Min |
| Quenched and tempred (+QT) | HRC28-32(Common Range) |
4: Supply size & Tolerance & Stock size
Product type | Size range | Length |
Hot rolled bar | Φ10-Φ190mm | 2000-5800mm |
Hot forged bar | Φ200-Φ600mm | 2000-5800mm |
Hot rolled plate/sheet | T:10-60mm; W:310-810mm | 2000-5800mm |
Hot forged plate | T:70-250mm; W:310-810mm | 2000-5800mm |
Hot Forged block | T: 260-500mm; W: 300-1000mm | 2000-5800mm |
Surface Finish | Turned | Milled | Grinding(Best) | Polished(Best) | Peeled(Best) | Black Forged | Black Rolled |
Tolerance | +0/+3mm | +0/+3mm | +0/+0.05mm | +0/+0.05mm | +0/+0.1mm | +0/+5mm | +0/+1mm |
Straighness | 1mm/1000mm max. | 3mm/1000mm max. | |||||
To ensure optimal performance for your application, we produce 1.3351 high speed tool steel on a dedicated make-to-order basis. This approach guarantees fresh production and allows us to customize the process for your specific requirements. Tell us your needs, and let's get started.
5: Ultrasonic Test
EN10228-3 class III or Sep 1921-84 D/D
6：Steel making & Forging processing
1): Steel making process:
EF+LF+VD
EAF+LF+VD
EF+LF+VD+ESR
EAF+LF+VD+ESR
2): Forging processing:
Initial temperature: 1150-1180℃
Final temperature: 900℃
Cooling in the furnace or in the sand
7: Heat treatment
1): Annealed:
Heat 1.3351 steel to 850-870℃
Cooling in the furnace
2): Quenching and tempering:
Heat 1.3351 steel to 1110-1130℃ in the salt bath furnace
Quench in the oil
Temper steel at 550-570℃ in the furnace
Cooling in the air.
Above curve in figure is a rough guide to the tempering behaviour of steels.
8：Application
1.3351 steel, as a high-performance high-speed steel, leverages its exceptional thermal hardness, wear resistance, and resistance to tempering softening to serve applications demanding extreme tool performance. Its typical uses fall into the following major categories:
1. High-performance cutting tools
Complex forming tools: Manufacturing high-precision gear hobs, broaches, reamers, and form milling cutters
High-load drilling and milling: Drills, end mills, and face mills for machining stainless steel, high-temperature alloys (e.g., Inconel), titanium alloys, and hardened steels (HRC > 50)
Thread cutting: High-performance taps and thread milling cutters, particularly for machining threads in difficult-to-cut materials
2. Molds requiring exceptional wear resistance and dimensional stability
Cold work dies: For precision blanking dies, cold extrusion punches, and dies requiring exceptional wear resistance and compressive strength
High-temperature working dies: As a high-speed steel substrate for certain warm forging dies or die inserts requiring thermal hardness
3. Wear-resistant components for special operating conditions
For manufacturing critical parts operating under high wear and moderate-to-high temperatures, such as precision bearings, guide rails, and nozzles
Country | ISO | Germany | Japan |
Standard | ISO 4957 | DIN 10027-2 | JIS G4403 |
Grade | HS6-5-4 | 1.3351 | SKH54 |
2: Chemical composition
Grade | C | Si | Mn | Cr | P | S | Mo | V | W |
| HS6-5-4/1.3351 | 1.25-1.40 | 0.45 Max | 0.40 Max | 3.80-4.50 | 0.030 Max | 0.030 Max | 4.20-5.00 | 3.70-4.20 | 5.20-6.00 |
| SKH54 | 1.25-1.40 | 0.45 Max | 0.40 Max | 3.80-4.50 | 0.030 Max | 0.030 Max | 4.20-5.00 | 3.70-4.20 | 5.20-6.00 |
3: Surface hardness and hardenability
Heat Treatment | Hardness |
Annealed (+A) | HB269Max |
| Hardening and Tempering (+HT) | HRC64 Min |
| Quenched and tempred (+QT) | HRC28-32(Common Range) |
4: Supply size & Tolerance & Stock size
Product type | Size range | Length |
Hot rolled bar | Φ10-Φ190mm | 2000-5800mm |
Hot forged bar | Φ200-Φ600mm | 2000-5800mm |
Hot rolled plate/sheet | T:10-60mm; W:310-810mm | 2000-5800mm |
Hot forged plate | T:70-250mm; W:310-810mm | 2000-5800mm |
Hot Forged block | T: 260-500mm; W: 300-1000mm | 2000-5800mm |
Surface Finish | Turned | Milled | Grinding(Best) | Polished(Best) | Peeled(Best) | Black Forged | Black Rolled |
Tolerance | +0/+3mm | +0/+3mm | +0/+0.05mm | +0/+0.05mm | +0/+0.1mm | +0/+5mm | +0/+1mm |
Straighness | 1mm/1000mm max. | 3mm/1000mm max. | |||||
To ensure optimal performance for your application, we produce 1.3351 high speed tool steel on a dedicated make-to-order basis. This approach guarantees fresh production and allows us to customize the process for your specific requirements. Tell us your needs, and let's get started.
5: Ultrasonic Test
EN10228-3 class III or Sep 1921-84 D/D
6：Steel making & Forging processing
1): Steel making process:
EF+LF+VD
EAF+LF+VD
EF+LF+VD+ESR
EAF+LF+VD+ESR
2): Forging processing:
Initial temperature: 1150-1180℃
Final temperature: 900℃
Cooling in the furnace or in the sand
7: Heat treatment
1): Annealed:
Heat 1.3351 steel to 850-870℃
Cooling in the furnace
2): Quenching and tempering:
Heat 1.3351 steel to 1110-1130℃ in the salt bath furnace
Quench in the oil
Temper steel at 550-570℃ in the furnace
Cooling in the air.
Above curve in figure is a rough guide to the tempering behaviour of steels.
8：Application
1.3351 steel, as a high-performance high-speed steel, leverages its exceptional thermal hardness, wear resistance, and resistance to tempering softening to serve applications demanding extreme tool performance. Its typical uses fall into the following major categories:
1. High-performance cutting tools
Complex forming tools: Manufacturing high-precision gear hobs, broaches, reamers, and form milling cutters
High-load drilling and milling: Drills, end mills, and face mills for machining stainless steel, high-temperature alloys (e.g., Inconel), titanium alloys, and hardened steels (HRC > 50)
Thread cutting: High-performance taps and thread milling cutters, particularly for machining threads in difficult-to-cut materials
2. Molds requiring exceptional wear resistance and dimensional stability
Cold work dies: For precision blanking dies, cold extrusion punches, and dies requiring exceptional wear resistance and compressive strength
High-temperature working dies: As a high-speed steel substrate for certain warm forging dies or die inserts requiring thermal hardness
3. Wear-resistant components for special operating conditions
For manufacturing critical parts operating under high wear and moderate-to-high temperatures, such as precision bearings, guide rails, and nozzles
