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E: enquiry@qilumetal.com
E: enquiry@qilumetal.com
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| Quantity: | |
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30NiCrMo16-6
Country | British | Europe |
Standard | BS970 | EN10083-3 |
Grade | EN30B/835M30 | 30NiCrMo16-6/1.6747 |
2: Chemical composition
Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
30NiCrMo16-6/ 1.6747 | 0.26-0.33 | 0.40Max | 0.50-0.80 | 0.025Max | 0.025Max | 1.20-1.50 | 0.30-0.60 | 3.30-4.30 |
| EN30B | 0.26-0.34 | 0.10-0.35 | 0.40-0.60 | 0.050Max | 0.050Max | 1.10-1.40 | 0.20-0.40 | 3.90-4.30 |
3: Mechanical properties .
Mechanical properties for 30NiCrMo16-6 quenching and tempering alloy steel according to EN10083-3.
Size range | Tensile strength | Yield strength | Alongation | Area of reduction | Impact value At RT/J |
d≤16 t≤8 | 1080-1230Mpa | 880Mpa Min | 10% Min | 45% Min | / |
16＜d≤40 8＜t≤20 | 1080-1230Mpa | 880Mpa Min | 10% Min | 45% Min | 35J Min |
| 40＜d≤100 20＜t≤60 | 1080-1230Mpa | 880Mpa Min | 10% Min | 45% Min | 35J Min |
| 100＜d≤160 60＜t≤100 | 900-1050Mpa | 790Mpa Min | 11% Min | 50% Min | 35J Min |
| 160＜d≤250 100＜t≤160 | 900-1050Mpa | 880Mpa Min | 11% Min | 50% Min | 35J Min |
Sampling and preparation of test pieces for 30NiCrMo16-6 quenching and tempering steel.
1): According to EN10083-1, all samples shall be taken at a distance of 12.5mm below the heat treated surface
2): As stipulated in the contract between buyer and seller.
4: Surface hardness and hardenability.
Heat Treatment | Hardness |
| Soft annealed (+A) | HB270Max |
Quenched and tempred (+QT) | HRC28-32(Common Range) |
Where the steel is ordered by using the symbols for normal (+H) or restricted (+HL, +HH) hardenability requirements, the hardenability values should apply below:
Distance in mm from quenched end | ||||||||||||||||
Distance | 1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |
Hardness In HRC + H | max | 55 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 53 | 53 |
min | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | |
Hardness In HRC + HH | max | 55 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 53 | 53 |
min | 50 | 50 | 50 | 49 | 49 | 49 | 49 | 49 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | |
Hardness In HRC + HL | max | 52 | 52 | 52 | 51 | 51 | 51 | 51 | 51 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
min | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | |
Scatter bands for the Rockwell - C hardness in the end quench hardenability test.
5: Supply size & Tolerance & Stock size
Product type | Size range | Length |
Hot rolled bar | Φ16-Φ300mm | 6000-9000mm |
Hot forged bar | Φ140-Φ800mm | 3000-5800mm |
Hot rolled plate/sheet | T:12-120mm; W:1500-2500mm | 2000-5800mm |
Hot Forged block | T: 80-800mm; W: 100-2500mm | 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 1.6747 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.
6：Forging processing
Put the 30NiCrMo16-6 ingot into the furnace and heat to 1100-1150℃
Cooling in the furnace
7: Heat treatment
Soft annealed:
Heat 30NiCrMo16-6 steel to 820-850℃ in the furnace
Slowly cooling in the furnace. The cooling rate is typically required to be ≤ 20°C/hour, especially within the sensitive range of 600°C to 300°C. The furnace must be cooled to below 250°C to 300°C before removing the product for air cooling
Normalized:
Heat 30NiCrMo16-6 steel to 860-900℃ in the furnace
Soak at this temperature in the furnace
Cooling in the air
Quenching and tempering:
Heat 30NiCrMo16-6 steel to 840-860℃ in the furnace
Soak at this temperature in the furnace
Quench in oil
Temper steel at 540-630℃ in the furnace
Take out of 30NiCrMo16-6 steel from furnace and cool in the air.
Remark: The conditions given above are for guidance, at the temperatures at the lower end of the range are generally applicable to hardening in water and those at the upper end for hardening in oil.
8: Weldability
30NiCrMo16-6 alloy steel is classified as a material with extremely poor weldability due to its chemical composition. Although its carbon content typically ranges from 0.26% to 0.33%, it approaches or exceeds the critical threshold of 0.25%, beyond which the weldability of steel deteriorates significantly.
9：Application
30NiCrMo16-6 is a high-strength, high-toughness, ultra-high-hardenability alloy structural steel. With its outstanding comprehensive mechanical properties, particularly exceptional fatigue resistance and fracture toughness, it is widely used in the following fields:
1. Aerospace and High-End Equipment
Aircraft landing gear: main landing gear struts, piston rods, wheel axles, etc.
Aeroengines: High-load turbine shafts, engine main shafts, critical connecting bolts
Helicopters: Rotor shafts, key transmission gears and shaft components
Rockets and spacecraft: Engine mounts, high-stress connecting components
2. Energy and Heavy-Duty Power Equipment
Power generation equipment: Large rotors for gas turbines and steam turbines, high-strength bolts
Oil and gas: Ultra-high-strength drilling tools (e.g., drill pipe joints), critical components for deep-sea equipment, piston rods and crankshafts for large compressors
Heavy-duty diesel engines: High-strength crankshafts, connecting rods
3. High-end machinery and tools
Injection molding and die-casting machinery: Large precision molds, high-locking-force tie bars (tie rods)
Heavy-duty presses and hydraulic presses: Main pistons, heavy-duty shafts
High-performance molds: Large hot-work mold bases requiring exceptional toughness and wear resistance
Specialty gears and bearings: Large, high-load gears and bearing rings for extreme operating conditions
Country | British | Europe |
Standard | BS970 | EN10083-3 |
Grade | EN30B/835M30 | 30NiCrMo16-6/1.6747 |
2: Chemical composition
Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
30NiCrMo16-6/ 1.6747 | 0.26-0.33 | 0.40Max | 0.50-0.80 | 0.025Max | 0.025Max | 1.20-1.50 | 0.30-0.60 | 3.30-4.30 |
| EN30B | 0.26-0.34 | 0.10-0.35 | 0.40-0.60 | 0.050Max | 0.050Max | 1.10-1.40 | 0.20-0.40 | 3.90-4.30 |
3: Mechanical properties .
Mechanical properties for 30NiCrMo16-6 quenching and tempering alloy steel according to EN10083-3.
Size range | Tensile strength | Yield strength | Alongation | Area of reduction | Impact value At RT/J |
d≤16 t≤8 | 1080-1230Mpa | 880Mpa Min | 10% Min | 45% Min | / |
16＜d≤40 8＜t≤20 | 1080-1230Mpa | 880Mpa Min | 10% Min | 45% Min | 35J Min |
| 40＜d≤100 20＜t≤60 | 1080-1230Mpa | 880Mpa Min | 10% Min | 45% Min | 35J Min |
| 100＜d≤160 60＜t≤100 | 900-1050Mpa | 790Mpa Min | 11% Min | 50% Min | 35J Min |
| 160＜d≤250 100＜t≤160 | 900-1050Mpa | 880Mpa Min | 11% Min | 50% Min | 35J Min |
Sampling and preparation of test pieces for 30NiCrMo16-6 quenching and tempering steel.
1): According to EN10083-1, all samples shall be taken at a distance of 12.5mm below the heat treated surface
2): As stipulated in the contract between buyer and seller.
4: Surface hardness and hardenability.
Heat Treatment | Hardness |
| Soft annealed (+A) | HB270Max |
Quenched and tempred (+QT) | HRC28-32(Common Range) |
Where the steel is ordered by using the symbols for normal (+H) or restricted (+HL, +HH) hardenability requirements, the hardenability values should apply below:
Distance in mm from quenched end | ||||||||||||||||
Distance | 1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |
Hardness In HRC + H | max | 55 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 53 | 53 |
min | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | |
Hardness In HRC + HH | max | 55 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 53 | 53 |
min | 50 | 50 | 50 | 49 | 49 | 49 | 49 | 49 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | |
Hardness In HRC + HL | max | 52 | 52 | 52 | 51 | 51 | 51 | 51 | 51 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
min | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | |
Scatter bands for the Rockwell - C hardness in the end quench hardenability test.
5: Supply size & Tolerance & Stock size
Product type | Size range | Length |
Hot rolled bar | Φ16-Φ300mm | 6000-9000mm |
Hot forged bar | Φ140-Φ800mm | 3000-5800mm |
Hot rolled plate/sheet | T:12-120mm; W:1500-2500mm | 2000-5800mm |
Hot Forged block | T: 80-800mm; W: 100-2500mm | 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 1.6747 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.
6：Forging processing
Put the 30NiCrMo16-6 ingot into the furnace and heat to 1100-1150℃
Cooling in the furnace
7: Heat treatment
Soft annealed:
Heat 30NiCrMo16-6 steel to 820-850℃ in the furnace
Slowly cooling in the furnace. The cooling rate is typically required to be ≤ 20°C/hour, especially within the sensitive range of 600°C to 300°C. The furnace must be cooled to below 250°C to 300°C before removing the product for air cooling
Normalized:
Heat 30NiCrMo16-6 steel to 860-900℃ in the furnace
Soak at this temperature in the furnace
Cooling in the air
Quenching and tempering:
Heat 30NiCrMo16-6 steel to 840-860℃ in the furnace
Soak at this temperature in the furnace
Quench in oil
Temper steel at 540-630℃ in the furnace
Take out of 30NiCrMo16-6 steel from furnace and cool in the air.
Remark: The conditions given above are for guidance, at the temperatures at the lower end of the range are generally applicable to hardening in water and those at the upper end for hardening in oil.
8: Weldability
30NiCrMo16-6 alloy steel is classified as a material with extremely poor weldability due to its chemical composition. Although its carbon content typically ranges from 0.26% to 0.33%, it approaches or exceeds the critical threshold of 0.25%, beyond which the weldability of steel deteriorates significantly.
9：Application
30NiCrMo16-6 is a high-strength, high-toughness, ultra-high-hardenability alloy structural steel. With its outstanding comprehensive mechanical properties, particularly exceptional fatigue resistance and fracture toughness, it is widely used in the following fields:
1. Aerospace and High-End Equipment
Aircraft landing gear: main landing gear struts, piston rods, wheel axles, etc.
Aeroengines: High-load turbine shafts, engine main shafts, critical connecting bolts
Helicopters: Rotor shafts, key transmission gears and shaft components
Rockets and spacecraft: Engine mounts, high-stress connecting components
2. Energy and Heavy-Duty Power Equipment
Power generation equipment: Large rotors for gas turbines and steam turbines, high-strength bolts
Oil and gas: Ultra-high-strength drilling tools (e.g., drill pipe joints), critical components for deep-sea equipment, piston rods and crankshafts for large compressors
Heavy-duty diesel engines: High-strength crankshafts, connecting rods
3. High-end machinery and tools
Injection molding and die-casting machinery: Large precision molds, high-locking-force tie bars (tie rods)
Heavy-duty presses and hydraulic presses: Main pistons, heavy-duty shafts
High-performance molds: Large hot-work mold bases requiring exceptional toughness and wear resistance
Specialty gears and bearings: Large, high-load gears and bearing rings for extreme operating conditions
