DIN 1.2379 , D2 Cold Work Tool Steel , Mold Steel , Special Steel Round Bars
|Steel Grade:||1.2379||Application:||Tool Steel, Mold Steel|
|Shape:||Round bar||Standard:||AISI, DIN, JIS, GB|
|Dimension:||Φ10 - 600 mm||Surface:||Black, Peeled, Turned, Grinded|
|Technique:||Hot rolled, Forged||Ultrasonic Test:||100% UT Passed|
|AISI / SAE||DIN / W.Nr||JIS||GB|
Chemical Composition (%)
| ||Hot Rolled||Forged|
|** We suggest ESR for the size over Φ400mm.|
EAF+(ESR) or EAF+LF+VD+(ESR), Hot rolled or Forged, Annealed, Hardness≤255HB,
Black surface or Machined surface (Peeled, Turned, Grinded), UT 100% Passed
1. With good hardenability and wear resistance.
2. With high oxidation resistance, good corrosion resistance after quenching and
polishing, small deformation after heat treatment.
For making different kinds of cold work molds with high accuracy and long service life,
cutting tools and measuring instruments, such as complex-shaped piercing dies,
threading screw plates, cold extrusion dies, cold cutting scissors, precision measuring
|1120-1160 °C||1050-1090 °C||≥850 °C||Thermal Annealing|
800 to 850°C
Slow controlled cooling in furnace at a rate of 10 to 20°C/hr down to approx. 600°C,
further cooling in air.
Hardness after annealing: max. 255 HB.
650 to 700°C
Slow cooling in furnace; intended to relieve stresses set up by extensive machining,
or incomplex shapes.
After through heating, hold in neutral atmosphere for 1 to 2 hours.
1020 to 1040°C
Complex shapes/air, simple shapes/air blast, oil, salt bath from (220 to 250°C or
500 to 550°C).
Holding time after temperature equalization: 15 to 30 minutes.
Obtainable hardness: 63 - 65 HRC.
Slow heating to tempering temperature immediately after hardening/time in furnace
1hour for each 20 mm of work piece thickness, but at least 2 hours/cooling in air.
For average hardness figures to be obtained, please refer to the tempering chart.
For certain cases we recommend to reduce tempering temperature and increase holding
For certain applications requiring improved retention of hardness, a nitriding treatment
What we can offer?
We offer a wide range of steel products in a wide variety of dimensions and executions,
acc.to the common international specifications or customerized.
Machining and heat treatment are available.
Also, we advise you in choosing the right materials.
1. Solid round bar
3. Square bar
4. Hexagon bar
|Hot Work Tool Steel||H11||1.2343||SKD6||√||Die Casting Dies, Extrusion Dies, Hammer Dies,|
|L6||1.2714 / 1.2713||SKT4||√|
|Cold Work Tool Steel||D3||1.2080||SKD1||√||Cutting Tools, Punching Tools, Shear Bladers, Reamers, Thread Rolling Dies, Calipers, Sockets etc.|
|--||1.2379 MOD||DC53 (Daido)||√|
|P20||1.2311||--||√|| Mold Base, Core & Cavity, Bumper Mold etc. |
|Alloy Steel||4120||25CrMo4 / 1.7218||SCM420|| ||Shafts, Gears, Drillers, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Crankshafts, Connecting Rods, Came, Couplings etc.|
|4135||34CrMo4 / 1.7220||SCM435|| |
|4130||34CrMo4 / 1.7220||SCM430||√|
|4140|| 42CrMo4 / 42CrMoS4 / 1.7225 ||SCM440||√|
|4142||41CrMo4 / 1.7223||SCM440|| |
|4340||34CrNiMo6 / 1.6582||SNCM439|| |
|5115||16MnCr5 / 16MnCrS5 / 1.7131|| || |
|5120||20MnCr5 / 20MnCrS5 / 1.7147||SMnC420H|| |
|5140||41Cr4 / 41CrS4 / 1.7035||SCr440||√|
|8620||21NiCrMo2 / 1.6523||SNCM220|| |
|8640||40NiCrMo2-2 / 1.6546||SNCM240|| |
|--||18CrNiMo7-6 / 17CrNiMo6 / 1.6587||--|| |
|9840||36CrNiMo4 / 1.6511||--|| |
|E71400||41CrAlMo7-10 / 1.8509||SACM1|| |
|--||34CrAlNi7 / 1.8550||--|| |
|Bearing Steel||E52100||100Cr6 / 1.3505||SUJ2||√||Bearing, Shafts|
|--||100CrMn6 / 1.3520||--|| |
|--||100CrMo7-3 / 1.3536||--|| |
|Spring Steel||5155||55Cr3 / 1.7176||SUP9|| ||Springs|
|6150||51CrV4 / 1.8159||SUP10|| |
|9261||60CrSi7 / 1.7108||--|| |
|Carbon Steel||1010||CK10 / C10E / 1.1121||S10C|| ||Shafts, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Came, Couplings etc.|
|1020||C22 / 1.0402||S20C||√|
|1040||CK40 / C40E / 1.1186||S40C||√|
|1045||CK45 / C45E / 1.1191||S45C||√|
|1050||CK50 / C50E / 1.1206||S50C||√|
|1055||CK55 / C55E / 1.1203||S55C|| |
|1064||CK60 / C60E / 1.1221||S58C|| |
|Structural Steel||A283||S235JR / ST37-2 / 1.0037||--|| ||Building Structures,|
Oil & Gas Platforms, Palm Oil Euipments,
|A570||S235JRG2 / RSt37-2 / 1.0038||--|| |
|A573||S235J2G3 / ST37-3 / 1.0116||--|| |
|1020||S275JR / ST44-2 / 1.0044||STK400|| |
|A501||S275J2G3 / ST44-3 / 1.0144||STK400|| |
|--||S355JR / 1.0045||SN400B;C|| |
|High Speed Tool Steel||M2||1.3343||SKH51||√||Reamer,|
Hob, Cutter, Bite, Drill, Punch, Tap, Brooch
1). √ means we have stock
2). Available Size:
Round: Dia. 5.5-1500 mm
Flat: T. 6-120 mm x W. 60-810 mm
Block: T. 120-1200mm x W. 300-1800mm
Plate: T. 10-460mm x W. 1500-2300mm
3). Delivery Condition:
Smelting: EAF+LF+VD (+ESR)
Making: Hot rolled, Cold rolled, Forged, Cold Drawn
Heat Treatment: Untreated, Annealing, N+T, Q+T
Surface: Black, Peeled, Turned, Milled, Grinded, Polished
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, military, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
steel round bar
steel flat bar
steel square bar
steel pipe/tube ( welded or seamless )
steel round pipes
steel square pipes
steel welded tubes
steel seamless tubes
Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Nuclear power steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can you provide a sample for our testing before confirm the order?
A: Yes. We can provide sample to you for approval before you place an order to us. Free sample is available if we have stock.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.
Warmly welcome! Pick up your phone and Call us!
Send us the inquiry here!
We will reply you at the first time.