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E: enquiry@qilumetal.com
E: enquiry@qilumetal.com
No. 18 Xiangfu Middle Road,Yuhua District, Changsha City
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1.2344 is one of the most popular hot work tool steel belongs to Germany standard DIN17350. It’s known for its excellent thermal strength, wear resistance and resistance to thermal fatigue. Due to it’s common usage and good performance, many countries have the equivalent steel with DIN 1.2344. Such as H13 from American ASTM A681, X40CrMoV5-1 from International standard ISO 4957, SKD61 from Japan standard JIS G4404, 4Cr5MoSiV1 from China standard GB/T1299.
1.2344 steel contains molybdenum and vanadium which serve as strengthening elements in steel. The chrome content helps it resist softening when utilized at high temperatures.
1: Steel equivalent
Country | USA | ISO | Germany | China | Japan |
Standard | ASTM A681 | ISO 4957 | DIN17350 | GB/T1299 | JIS G4404 |
Grade | H13 | X40CrMoV5-1 | 1.2344 | 4Cr5MoSiV1 | SKD61 |
2: Chemical composition
Grade | C | Si | Mn | P | S | Cr | Mo | V |
H13 | 0.32-0.45 | 0.8-1.2 | 0.2-0.5 | 0.03Max | 0.03Max | 4.75-5.5 | 1.1-1.75 | 0.8-1.2 |
X40CrMoV5-1 | 0.35-0.42 | 0.8-1.2 | 0.25-0.5 | 0.03Max | 0.020Max | 4.8-5.5 | 1.2-1.5 | 0.85-1.15 |
1.2344 | 0.37-0.42 | 0.9-1.2 | 0.3-0.5 | 0.03Max | 0.03Max | 4.8-5.5 | 1.2-1.5 | 0.9-1.1 |
4Cr5MoSiV1 | 0.32-0.42 | 0.8-1.2 | 0.2-0.5 | 0.03Max | 0.03Max | 4.75-5.5 | 1.1-1.75 | 0.8-1.2 |
SKD61 | 0.35-0.42 | 0.8-1.2 | 0.25-0.5 | 0.03Max | 0.03Max | 4.8-5.5 | 1-1.5 | 0.8-1.15 |
3: Surface hardness and hardenability
Heat Treatment | Hardness |
Annealed (+A) | HB229Max |
Cold-drawn condition | HB262Max |
Hardening and Tempering (+HT) | HRC50 Min |
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. | |||||
Qilu steel stock hot rolled bar and forged bars more than ten thousands tons every month, below our our stock size.
1): Stock diameter for hot rolled bar
10 | 12 | 15 | 18 | 20 | 22 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 45 | 50 |
55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 120 | 130 | 140 |
150 | 160 | 170 | 180 | 190 |
2): Stock diameter for hot forged bar
200 | 210 | 220 | 230 | 240 | 250 | 260 | 270 | 280 | 290 |
300 | 310 | 320 | 330 | 340 | 350 | 360 | 370 | 380 | 390 |
400 |
Since the stocks change everyday, if you want to know our stock available information, please contact our salesman.
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:
Put the 1.2344 ingot into the furnace and pre-heat to 600-700℃
Continue heating the ingot to initial temperature: 1050-1100℃
Forge the ingot, forging temperature should be not less than 850-900℃
Cooling in the sand after forging
7: Heat treatment
1): Annealed:
Heat 1.2344 steel to 800-850℃ in the furnace
Soak at this temperature in the furnace
Cooling in the furnace slowly
2): Quenching and tempering:
Preheat Temperature: 788℃
Heat 1.2344 steel to 1010-1030℃ in the salt bath furnace
Soak at this temperature in the furnace
Quench in oil
Temper steel at 540-560℃ in the furnace
Take out from furnace and cool in the air.
Above curve in figure is just a rough guide to the tempering behaviour of steels. When applying the curves for an estimation of the hardness which can be expected in quenched and tempered tools, it should be taken into account that the optimum heat-treatment conditions for the tools are not necessarily identical with those specified for the test pieces.
The heating time of test pieces in a salt batch shall be as give in below table:
Total heating time of test pieces in a salt bath
Nature of steel | Hardening Time min | Tempering Time min |
Cold or hot work steels | 25 +/- 1 | 60 |
High-speed steels | 3 | Minimum 2 periods of 60 each |
If the test pieces are not heated in a salt batch, the heating time must be extended accordingly, and the times for heating give above are not valid for thicker tools.
8：Application
1.2344 is widely used in various industrial applications due to it’s excellent high-temperature strength, wear resistance and thermal fatigue resistance. Here are some main application.
1): Die casting dies: Used for aluminum,magnesium, zinc alloy die casting
2): Extrusion dies: Suitable for aluminum and copper extrusion
3): Forging dies: Used in hot forging processes for steel and non-ferrous metals.
4): Injection molds: Used for high-temperature plastic injection mold, especially for engineering plastics that require high thermal stability.
5): Compression molds: Suitable for manufacturing plastic components under high pressure and temperature.
6): Hot stamping tools: Used in the automotive industry for forming high-strength steel parts
7): Hot shear blades: Ideal for cutting hot materials, such as in steel mills
8): Mandrels and cores: Used in tube and pipe manufacturing due to their high wear resistance
9): Hot runner systems: Applied in plastic injection molding to maintain consistent material flow at high temperatures.
1.2344 is one of the most popular hot work tool steel belongs to Germany standard DIN17350. It’s known for its excellent thermal strength, wear resistance and resistance to thermal fatigue. Due to it’s common usage and good performance, many countries have the equivalent steel with DIN 1.2344. Such as H13 from American ASTM A681, X40CrMoV5-1 from International standard ISO 4957, SKD61 from Japan standard JIS G4404, 4Cr5MoSiV1 from China standard GB/T1299.
1.2344 steel contains molybdenum and vanadium which serve as strengthening elements in steel. The chrome content helps it resist softening when utilized at high temperatures.
1: Steel equivalent
Country | USA | ISO | Germany | China | Japan |
Standard | ASTM A681 | ISO 4957 | DIN17350 | GB/T1299 | JIS G4404 |
Grade | H13 | X40CrMoV5-1 | 1.2344 | 4Cr5MoSiV1 | SKD61 |
2: Chemical composition
Grade | C | Si | Mn | P | S | Cr | Mo | V |
H13 | 0.32-0.45 | 0.8-1.2 | 0.2-0.5 | 0.03Max | 0.03Max | 4.75-5.5 | 1.1-1.75 | 0.8-1.2 |
X40CrMoV5-1 | 0.35-0.42 | 0.8-1.2 | 0.25-0.5 | 0.03Max | 0.020Max | 4.8-5.5 | 1.2-1.5 | 0.85-1.15 |
1.2344 | 0.37-0.42 | 0.9-1.2 | 0.3-0.5 | 0.03Max | 0.03Max | 4.8-5.5 | 1.2-1.5 | 0.9-1.1 |
4Cr5MoSiV1 | 0.32-0.42 | 0.8-1.2 | 0.2-0.5 | 0.03Max | 0.03Max | 4.75-5.5 | 1.1-1.75 | 0.8-1.2 |
SKD61 | 0.35-0.42 | 0.8-1.2 | 0.25-0.5 | 0.03Max | 0.03Max | 4.8-5.5 | 1-1.5 | 0.8-1.15 |
3: Surface hardness and hardenability
Heat Treatment | Hardness |
Annealed (+A) | HB229Max |
Cold-drawn condition | HB262Max |
Hardening and Tempering (+HT) | HRC50 Min |
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. | |||||
Qilu steel stock hot rolled bar and forged bars more than ten thousands tons every month, below our our stock size.
1): Stock diameter for hot rolled bar
10 | 12 | 15 | 18 | 20 | 22 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 45 | 50 |
55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 120 | 130 | 140 |
150 | 160 | 170 | 180 | 190 |
2): Stock diameter for hot forged bar
200 | 210 | 220 | 230 | 240 | 250 | 260 | 270 | 280 | 290 |
300 | 310 | 320 | 330 | 340 | 350 | 360 | 370 | 380 | 390 |
400 |
Since the stocks change everyday, if you want to know our stock available information, please contact our salesman.
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:
Put the 1.2344 ingot into the furnace and pre-heat to 600-700℃
Continue heating the ingot to initial temperature: 1050-1100℃
Forge the ingot, forging temperature should be not less than 850-900℃
Cooling in the sand after forging
7: Heat treatment
1): Annealed:
Heat 1.2344 steel to 800-850℃ in the furnace
Soak at this temperature in the furnace
Cooling in the furnace slowly
2): Quenching and tempering:
Preheat Temperature: 788℃
Heat 1.2344 steel to 1010-1030℃ in the salt bath furnace
Soak at this temperature in the furnace
Quench in oil
Temper steel at 540-560℃ in the furnace
Take out from furnace and cool in the air.
Above curve in figure is just a rough guide to the tempering behaviour of steels. When applying the curves for an estimation of the hardness which can be expected in quenched and tempered tools, it should be taken into account that the optimum heat-treatment conditions for the tools are not necessarily identical with those specified for the test pieces.
The heating time of test pieces in a salt batch shall be as give in below table:
Total heating time of test pieces in a salt bath
Nature of steel | Hardening Time min | Tempering Time min |
Cold or hot work steels | 25 +/- 1 | 60 |
High-speed steels | 3 | Minimum 2 periods of 60 each |
If the test pieces are not heated in a salt batch, the heating time must be extended accordingly, and the times for heating give above are not valid for thicker tools.
8：Application
1.2344 is widely used in various industrial applications due to it’s excellent high-temperature strength, wear resistance and thermal fatigue resistance. Here are some main application.
1): Die casting dies: Used for aluminum,magnesium, zinc alloy die casting
2): Extrusion dies: Suitable for aluminum and copper extrusion
3): Forging dies: Used in hot forging processes for steel and non-ferrous metals.
4): Injection molds: Used for high-temperature plastic injection mold, especially for engineering plastics that require high thermal stability.
5): Compression molds: Suitable for manufacturing plastic components under high pressure and temperature.
6): Hot stamping tools: Used in the automotive industry for forming high-strength steel parts
7): Hot shear blades: Ideal for cutting hot materials, such as in steel mills
8): Mandrels and cores: Used in tube and pipe manufacturing due to their high wear resistance
9): Hot runner systems: Applied in plastic injection molding to maintain consistent material flow at high temperatures.
