DC53 DIN 1.2360 Cold Work Tool Steel Bar
Short Description:
DC53 DIN 1.2360 cold work tool steel bar offers high hardness, improved toughness and wear resistance for precision dies, punches and cold forming tools. Custom diameter, surface, cutting, UT, MTC and EN 10204 3.1 available.
DC53 DIN 1.2360 Cold Work Tool Steel Bar is a high-performance cold work tool steel bar supplied for precision dies, punches, cold forming tools, blanking dies, stamping dies, shear blades and tooling components requiring high hardness, improved toughness and wear resistance. DC53 is commonly used as an upgraded cold work die steel, while DIN 1.2360 / X48CrMoV8-1-1 type material is associated with medium-alloy cold work tool steel applications.
SAKY STEEL supplies DC53 / 1.2360 type tool steel bar in annealed, hot rolled, forged, peeled, turned or ground condition according to purchase requirements. Available services may include cutting, peeling, turning, grinding, rough machining, dimensional inspection, hardness testing, ultrasonic testing when specified, MTC and EN 10204 3.1 documentation.
Product Parameters
| Item | Product Details |
|---|---|
| Product Name | DC53 DIN 1.2360 Cold Work Tool Steel Bar |
| Grade | DC53 / DIN 1.2360 type / Cr8 modified steel |
| DIN / EN Designation | 1.2360 / X48CrMoV8-1-1 reference |
| Material Family | Cold work tool steel |
| Product Shape | Round bar and forged bar |
| Size Range | Regular and custom diameters by order |
| Length | 1000–6000 mm or cut to length |
| Surface Finish | Black, peeled, turned, ground |
| Delivery Condition | Annealed or heat treated when specified |
| Standard | DIN EN ISO 4957 / ASTM A681 reference |
| Tolerance | Mill, h9, h11 or drawing-specific |
| Available Services | Cutting, peeling, turning, grinding, machining |
| Certificates | MTC, EN 10204 3.1, dimensional report |
Chemical Composition
DC53 is generally regarded as a Cr8 series modified cold work die steel with added molybdenum and vanadium for improved hardness, toughness and wear resistance. DIN 1.2360 / X48CrMoV8-1-1 has a different standard designation and should be verified against the final purchase specification. The following table provides typical reference chemistry for material selection discussion.
| Element | Typical Reference Content | Technical Function |
|---|---|---|
| Carbon | About 0.90–1.05% | Provides hardness and wear resistance after heat treatment |
| Chromium | About 7.50–8.50% | Improves hardenability and wear resistance |
| Molybdenum | About 1.80–2.30% | Supports temper resistance and secondary hardening |
| Vanadium | About 0.20–0.40% | Refines carbides and improves wear resistance |
| Silicon | About 0.80–1.10% | Supports strength and tempering response |
| Manganese | About 0.30–0.50% | Supports hardenability and melting control |
| Phosphorus | Controlled maximum | Restricted to support toughness |
| Sulfur | Controlled maximum | Restricted to limit inclusions and improve tool reliability |
| Iron | Balance | Base metal matrix |
Actual chemical composition shall be confirmed by the applicable product specification and MTC.
Mechanical and Heat Treatment Properties
Mechanical properties of DC53 cold work tool steel bar depend on diameter, heat treatment, tempering temperature, test direction, working hardness and tool geometry. The following values are typical references for engineering discussion and should not replace order-specific MTC or heat-treatment records.
| Property | Typical Reference | Condition | Engineering Meaning |
|---|---|---|---|
| Annealed Hardness | Usually below about 255 HB | Annealed bar | Supports machining before hardening |
| Working Hardness | About 60–63 HRC reference | Hardened and tempered | Used for precision dies and punches |
| Toughness | Improved compared with conventional D2 type steel | Proper heat treatment | Helps reduce chipping and cracking risk |
| Wear Resistance | High for cold work tools | Hardened condition | Supports blanking, forming and stamping dies |
| Dimensional Stability | Good with controlled heat treatment | Quenched and tempered | Important for precision tooling |
| EDM Response | Often selected for improved post-EDM reliability | Process dependent | Final surface treatment is still important |
| Density | About 7.8 g/cm³ reference | Room temperature | Used for bar weight calculation |
| Service Condition | Cold work use | Ambient or moderate temperature | Not intended as hot work die steel |
Common Size Table
| Diameter | Length | Surface | Processing | Typical Use |
|---|---|---|---|---|
| Ø10–30 mm | 1000–6000 mm | Peeled or ground | Cutting and grinding | Small punches and pins |
| Ø35–80 mm | 2000–6000 mm | Peeled or turned | Machining allowance | Punches, inserts and die parts |
| Ø85–160 mm | Custom cut length | Rough turned | Saw cut or machined | Cold forming die components |
| Ø165–300 mm | Made to order | Forged and turned | UT when specified | Large tooling blanks |
| Above Ø300 mm | Project specific | Forged or machined | Technical review required | Heavy cold work tooling |
Different Specifications Comparison
Round Bar Surface and Production Comparison
| Condition | Main Feature | Recommended Use | Purchase Advice |
|---|---|---|---|
| Hot Rolled Bar | Economical mill surface | Rough machining | Specify machining allowance |
| Forged Bar | Suitable for larger sections | Heavy tooling blanks | UT may be requested |
| Peeled Bar | Scale-free surface | CNC machining | Reduces surface preparation |
| Turned Bar | Controlled diameter allowance | Tooling blanks | Confirm final machining size |
| Ground Bar | Tight tolerance and smooth finish | Precision dies and punches | State h9, h8 or drawing tolerance |
Comparison with Related Cold Work Tool Steels
| Grade | Main Strength | Relative Limitation | Typical Selection |
|---|---|---|---|
| DC53 | High hardness with improved toughness | Requires controlled heat treatment | Precision dies, punches and forming tools |
| D2 / 1.2379 | High wear resistance | Lower toughness than DC53 in many die applications | Long-run blanking and wear tools |
| A2 / 1.2363 | Air-hardening and dimensional stability | Different wear and toughness balance | Precision tools needing air-hardening response |
| O1 / 1.2510 | Good machinability and oil-hardening response | Lower wear resistance than Cr-rich grades | General punches, gauges and cutting tools |
Equivalent Standards and International Names
| System | Designation | Relationship |
|---|---|---|
| Commercial Grade | DC53 | Modified cold work die steel grade |
| DIN / W.Nr. | 1.2360 | Related cold work tool steel reference |
| EN Name | X48CrMoV8-1-1 | Common designation for DIN 1.2360 type steel |
| Material Family | Cr8 cold work tool steel | General family reference |
| Product Standard | DIN EN ISO 4957 | Tool steel specification reference |
| ASTM Reference | ASTM A681 | Alloy tool steel reference, not exact DC53 designation |
Production Process Flow
Alloying materials are selected according to the required DC53 or 1.2360 type chemistry.
Chemistry, cleanliness and residual elements are controlled during melting.
Ingot or billet quality is prepared for hot working and later tool performance.
The material is reduced into round bar or forged bar form.
Annealing improves machinability before final die manufacturing.
Bars may be peeled, turned, ground or cut to size.
Dimensions, surface, hardness and documentation are checked.
Heat-number marking and export packing are prepared.
Product Inspection
| Inspection | Method | Purpose |
|---|---|---|
| Chemical Analysis | Laboratory analysis or MTC review | Confirm DC53 / 1.2360 type chemistry |
| PMI | Positive material identification | Available when specified; not a substitute for full chemistry |
| Hardness Test | HB or HRC test as applicable | Confirm annealed or heat-treated condition |
| Dimensional Inspection | Caliper, micrometer and length check | Verify diameter, length and tolerance |
| Surface Inspection | Visual and finish inspection | Check cracks, scale, laps or handling damage |
| Ultrasonic Testing | UT when specified | Evaluate internal soundness in suitable sizes |
| Traceability Review | Heat number and label verification | Link product to MTC and EN 10204 3.1 |
Product Packaging
Bars can be protected with oil, VCI paper, film or waterproof wrapping.
Steel straps, separators and padding reduce movement and scratching.
Ground or machined bars can receive end caps or padded protection.
Export packing is selected according to bar diameter, length and weight.
Grade, size, heat number and customer shipping marks can be retained.
Applications, Core Performance and Fabrication
Primary Applications
- Precision blanking dies and punching dies
- Cold forming dies and stamping dies
- Thread rolling dies and forming rolls
- Shear blades, slitting knives and trimming tools
- EDM-machined die inserts and precision tooling
- Cold work components requiring toughness and wear resistance
Core Performance
DC53 is often selected when users want higher working hardness and improved chipping resistance compared with conventional high-carbon high-chromium die steels. It is suitable for precision tools where both wear resistance and toughness are important.
Machinability
Machinability is best in the annealed condition. Major turning, milling, drilling and rough machining are usually completed before hardening and tempering. Ground or peeled bars help reduce preparation time before CNC machining.
EDM and Surface Finishing
DC53 is often used for EDM-machined precision dies. After EDM, the recast layer, micro-cracks and surface stress should be controlled by suitable polishing, stress relieving or finishing procedures according to tool requirements.
Heat Treatment
DC53 is normally supplied annealed before machining and then hardened and tempered to the required working hardness. Heat treatment parameters should be selected according to bar diameter, tool geometry, target hardness, toughness requirement and distortion control.
Why Choose SAKY STEEL?
Diameter, length, surface finish and machining allowance can be supplied according to drawings.
Material identification can be maintained from documentation to final packing.
MTC (Mill Test Certificate / 质保书) can be provided according to the purchase order.
EN 10204 3.1 documentation is available when specified by the order.
Hardness, dimensional, PMI and UT inspection can be arranged when specified.
Bundles, wooden cases, pallets and customer shipping marks can be arranged.
FAQ
What is DC53 cold work tool steel?
DC53 is a high-performance cold work die steel designed for high hardness, improved toughness and wear resistance. It is commonly used for precision dies, punches, cold forming tools and stamping components.
Is DC53 exactly the same as DIN 1.2360?
Not always. DC53 and DIN 1.2360 are related cold work tool steel references, but they should not be treated as automatically identical. The final order should confirm chemistry, standard, heat treatment and inspection requirements.
What is the difference between DC53 and D2?
DC53 is often selected as an upgraded alternative to D2 type steel when improved toughness and chipping resistance are required. D2 remains strong in wear resistance, while DC53 can offer a better balance of hardness, toughness and machinability in many die applications.
Can DC53 bar be supplied ground or peeled?
Yes. Black, peeled, turned and ground surfaces can be discussed according to diameter, tolerance and final machining requirement. Ground bars are suitable where tighter diameter control or improved surface finish is required.
Is DC53 suitable for EDM processing?
DC53 is often used for EDM-machined precision die parts. After EDM, surface finishing, polishing or stress relief should be considered to reduce recast-layer and micro-crack risks.
Is ultrasonic testing available for DC53 bars?
UT can be arranged for suitable bar diameters and forged bars when specified. The order should define the test method, acceptance level and reporting requirement.
Can MTC and EN 10204 3.1 be provided?
SAKY STEEL can provide MTC and EN 10204 3.1 documentation according to the purchase order. Hardness, dimensional, PMI or UT reports may also be arranged when specified.
