DIN 1.2419 O7 Cold Work Tool Steel Bar is an oil-hardening cold work tool steel bar with good wear resistance, high cutting edge stability and reliable dimensional accuracy. This grade is also known as 105WCr6, AISI O7, UNS T31507 and oil-hardening non-deforming tool steel. It is widely used for punches, blanking dies, thread forming tools, reamers, cutters, gauges, knives, woodworking tools and precision cold work tooling.
SAKY STEEL supplies DIN 1.2419 tool steel bars, O7 tool steel round bars, 105WCr6 steel rods, flat bars, square bars, forged bars and cut-to-size tool steel blocks. Customized diameter, thickness, width, length, tolerance and surface finish are available. MTC (Mill Test Certificate), EN 10204 3.1 certificate, hardness test, UT inspection, dimensional inspection and third-party inspection can be provided according to project requirements.
Product Parameters
| Item |
Details |
| Product Name |
DIN 1.2419 O7 Cold Work Tool Steel Bar / 105WCr6 Tool Steel Rod |
| Grade |
DIN 1.2419 / 105WCr6 / AISI O7 / UNS T31507 |
| Material Type |
Oil-hardening cold work tool steel / cold work die steel |
| Shape & Sizes |
Round bar, flat bar, square bar, forged bar, steel rod and cut-to-size tool steel block |
| Common Diameter |
Round bar 6 mm – 300 mm; larger forged sizes available upon request |
| Flat Bar Size |
Thickness 10 mm – 300 mm, width and length customized according to drawing |
| Length |
1000 mm – 6000 mm, cut-to-length available according to customer requirement |
| Surface Finish |
Black, bright, peeled, turned, milled, ground, polished |
| Standards |
EN ISO 4957, ASTM A681 reference, DIN 17350 reference or customer technical specification |
| Tolerance |
Standard tolerance, h9, h11, k12, ground tolerance or customized tolerance |
| Supply Condition |
Annealed, rough turned, peeled, ground, pre-machined or customer-required condition |
| Certificate |
MTC, EN 10204 3.1 certificate, hardness report, UT report and third-party inspection available |
Chemical Composition
The following chemical composition is a typical reference range for DIN 1.2419 / 105WCr6 / O7 cold work tool steel bar. Final values should be confirmed according to the actual Mill Test Certificate.
| Element |
Typical Content (%) |
Function in 1.2419 Tool Steel |
| Carbon (C) |
1.00 – 1.10 |
Provides hardness, wear resistance and cutting performance after heat treatment |
| Silicon (Si) |
0.10 – 0.40 |
Supports strength and steel stability during heat treatment |
| Manganese (Mn) |
0.80 – 1.10 |
Improves hardenability and processing stability |
| Chromium (Cr) |
0.90 – 1.10 |
Improves hardenability, wear resistance and oxidation resistance |
| Tungsten (W) |
1.00 – 1.30 |
Improves cutting edge stability, wear resistance and hot hardness support |
| Phosphorus (P) |
≤ 0.030 |
Controlled impurity for tool steel quality |
| Sulfur (S) |
≤ 0.030 |
Controlled impurity for clean structure and toughness |
Mechanical Properties
DIN 1.2419 O7 tool steel bar is usually supplied in annealed condition and then oil hardened and tempered according to the final tool requirement. Mechanical properties depend on size, heat treatment, tempering temperature and working condition.
| Property |
Reference Value |
Engineering Meaning |
| Annealed Hardness |
Approx. ≤ 230 HB |
Suitable for machining, milling, drilling and tool blank preparation |
| Hardened & Tempered Hardness |
Approx. 54 – 64 HRC |
Suitable for punches, dies, knives, reamers and cutting tools |
| Wear Resistance |
High in O-series tool steels |
Supports long service life in cutting and forming tools |
| Dimensional Stability |
Good after proper oil hardening |
Useful for precision tools, gauges and non-deforming tool applications |
| Cutting Edge Stability |
Good |
Suitable for knives, cutters, reamers and woodworking tools |
| Hardenability |
Moderate |
Suitable for small and medium sections; large sections should be evaluated carefully |
| Machinability |
Good in annealed condition |
Recommended to machine before final hardening and tempering |
Common Size Table
| Product Form |
Common Size |
Surface Finish |
Typical Use |
| 1.2419 Round Bar |
Ø6 – Ø50 mm × 1000 – 6000 mm |
Bright, peeled, ground |
Punches, cutters, small dies, precision tools |
| O7 Round Bar |
Ø55 – Ø150 mm × 2000 – 6000 mm |
Black, peeled, rough turned |
Cold work die parts, forming tools, machine knives |
| 105WCr6 Forged Bar |
Ø160 – Ø300 mm or customized |
Forged, rough turned, machined |
Large tool blanks, die inserts, heavy-duty tooling |
| 1.2419 Flat Bar |
Thickness 10 – 100 mm, width customized |
Black, milled, ground |
Blanking dies, knives, shear tools, forming plates |
| O7 Tool Steel Block |
Cut-to-size according to drawing |
Milled, ground, pre-machined |
Precision molds, gauges, tool inserts and die components |
Different Specifications Comparison
| Material / Form |
Main Feature |
Recommended Application |
Selection Advice |
| DIN 1.2419 Round Bar |
Good wear resistance and cutting edge stability |
Punches, cutters, dies, reamers, gauges |
Recommended for standard O7 bar machining requirements |
| DIN 1.2419 Flat Bar |
Good for plate-type dies and knives |
Blanking dies, shear tools, woodworking tools, shape knives |
Recommended when flat geometry is required |
| DIN 1.2419 Forged Bar |
Better for larger sections and critical tool parts |
Large dies, mold blocks, heavy-duty cold work tools |
Recommended for large size or high-load tooling |
| O7 vs O1 |
O7 contains higher tungsten than O1 |
Tools requiring improved wear resistance and edge holding |
Choose O7 when higher abrasion resistance is required |
| O7 vs D2 |
O7 is oil-hardening with lower alloy content than D2 |
Precision tools, gauges and knives |
Choose D2 for very high wear resistance and larger hardened sections |
| O7 vs 1.2842 / O2 |
O7 offers tungsten-enhanced cutting durability |
Cutters, reamers, thread tools and precision cold work tools |
Choose based on wear resistance, hardenability and dimensional accuracy needs |
Equivalent Standards and International Names
| Name / Standard |
Designation |
Remarks |
| DIN / W.Nr. |
1.2419 |
German material number for 105WCr6 cold work tool steel |
| DIN Name |
105WCr6 |
Tungsten-chromium oil-hardening cold work steel |
| AISI / ASTM |
O7 |
Oil-hardening cold work tool steel reference |
| UNS Number |
UNS T31507 |
Common UNS designation for O7 tool steel |
| JIS Reference |
SKS31 |
Common equivalent or similar grade reference |
| French Reference |
105WC13 |
Common international equivalent or similar reference |
| Material Family |
Cold Work Tool Steel |
Used for cutting, punching, forming and precision tooling |
| Common Product Forms |
Round bar, flat bar, square bar, forged bar, block |
Different forms for tool and die manufacturing |
Grade Confirmation: DIN 1.2419 / 105WCr6 / O7 is an oil-hardening cold work tool steel. For precision tooling, please confirm hardness, heat treatment condition, machining allowance and inspection requirements before ordering.
Production Process Flow
| Step |
Process |
Quality Control Focus |
| 1 |
Raw Material Selection |
Check steel grade, heat number and raw material traceability |
| 2 |
Melting / Refining |
Control C, Mn, Cr, W and impurity elements |
| 3 |
Ingot / Billet Preparation |
Ensure suitable billet quality and internal structure |
| 4 |
Hot Rolling / Forging |
Control bar size, forging ratio and internal quality |
| 5 |
Annealing |
Reduce hardness and improve machinability before tool manufacturing |
| 6 |
Straightening / Cutting |
Control straightness, length and machining allowance |
| 7 |
Peeling / Turning / Milling / Grinding |
Improve surface finish and dimensional tolerance |
| 8 |
Inspection and Testing |
Chemical analysis, hardness, UT, dimension and surface inspection |
| 9 |
Marking and Traceability |
Mark grade, heat number, size and batch information |
| 10 |
Packaging and Shipment |
Export wooden case, bundle packing, label and shipping mark |
Product Inspection
| Inspection Item |
Inspection Method |
Purpose |
| Chemical Composition |
Spectrometer analysis / laboratory test |
Confirm DIN 1.2419 / O7 tool steel grade and alloy elements |
| Hardness Test |
HB / HRC testing according to supply condition |
Verify annealed hardness or heat-treated hardness |
| Ultrasonic Testing |
UT inspection if required |
Check internal defects for critical bars and forged blocks |
| Dimension Inspection |
Caliper, micrometer, straightness inspection |
Confirm diameter, thickness, width, length and tolerance |
| Surface Inspection |
Visual inspection and surface quality check |
Check cracks, pits, scratches, decarburization and surface defects |
| Mechanical Test |
Tensile, impact or customer-defined test if required |
Support tool steel engineering and project acceptance |
| Third-Party Inspection |
SGS, BV, TUV or customer-appointed inspection |
Provide independent verification for project orders |
| Certificate |
MTC / EN 10204 3.1 / UT report |
Ensure material traceability and technical documentation |
Product Packaging
| Packaging Item |
Details |
Benefit |
| Surface Protection |
Anti-rust oil, plastic film, anti-rust paper or protective wrapping |
Protects tool steel surface during storage and transportation |
| Bundle Packing |
Bars bundled with steel strips or protective belts |
Prevents movement, bending and collision |
| Wooden Case / Wooden Pallet |
Export-standard wooden case or pallet |
Suitable for long-distance sea, air and truck shipment |
| Edge Protection |
Edge and corner protection for flat bars or blocks |
Reduces edge damage during loading and unloading |
| Labeling |
Grade, size, heat number, quantity, net weight and customer mark |
Improves material traceability after delivery |
| Document Support |
Packing list, invoice, MTC, EN 10204 3.1 certificate and UT report if required |
Supports customs clearance and project acceptance |
Applications & Machinability
Applications
| Industry |
Typical Parts |
Why DIN 1.2419 O7 Tool Steel Bar Is Used |
| Medical Instruments |
Precision stamping dies, surgical tool molds, cutting and forming tools |
Good hardness, wear resistance and dimensional stability support precision tooling |
| Aerospace |
Precision forming dies, cutting tools, punches, gauges and inspection tools |
Good dimensional accuracy and cutting edge stability support tool manufacturing |
| Marine Hardware |
Cold forming dies, trimming tools, blades and wear-resistant tooling |
Good wear resistance and oil-hardening stability support cold work tooling |
| Chemical Processing |
Mold tools, cutting knives, forming dies and wear-resistant components |
Suitable for tool and die parts; corrosion environment should be evaluated separately |
| Tooling & Die Manufacturing |
Blanking dies, punches, thread forming tools, reamers, cutters, gauges, knives |
O7 combines wear resistance, cutting edge stability and dimensional control for precision tools |
Machinability, Welding and Heat Treatment
| Processing Property |
Performance |
Recommendation |
| Machinability |
Good in annealed condition; not a free-cutting steel like 303 stainless steel |
Machine in annealed condition before final hardening whenever possible |
| Cutting / Grinding |
Suitable for milling, drilling, wire cutting, EDM and grinding |
Control grinding heat and allow enough machining allowance for precision tools |
| Welding Performance |
Welding is not the preferred process for tool steel and may cause cracking or hardness change |
Use preheating, proper filler and post-weld heat treatment if welding is unavoidable |
| Heat Treatment |
Suitable for oil hardening and tempering |
Heat treatment should follow tool design, required hardness and dimensional control target |
| Tempering |
Can be tempered to balance hardness, toughness and tool life |
Select tempering temperature according to final cutting performance and wear resistance |
| Surface Treatment |
Can be polished, ground or surface treated for suitable applications |
Confirm final surface treatment according to die and tool working condition |
Why Choose SAKY STEEL?
| Advantage |
Description |
| Professional Tool Steel Supply |
SAKY STEEL supplies tool steel bars, cold work tool steel, hot work tool steel, mold steel, alloy steel bars and customized steel materials for global industrial customers. |
| Customized Size Capability |
Diameter, thickness, width, length, surface finish, tolerance, cutting service and machining allowance can be customized according to customer drawings. |
| Strict Quality Control |
Material traceability, heat number control, hardness test, UT inspection, dimensional inspection, surface inspection and third-party inspection can be arranged. |
| Certificate Support |
We can provide MTC (Mill Test Certificate / 质保书), EN 10204 3.1 certificate, UT report, hardness report, inspection report and other quality documents according to order requirements. |
| Export Packaging Experience |
Export wooden cases, wooden pallets, protective wrapping, anti-rust oil and clear labels help ensure safe delivery for international shipments. |
| Technical Service Support |
Our team can support grade selection, equivalent standard checking, heat treatment discussion, machining allowance confirmation and technical document preparation before shipment. |
FAQ
Q1: What is DIN 1.2419 O7 Cold Work Tool Steel Bar?
DIN 1.2419 O7 Cold Work Tool Steel Bar is an oil-hardening cold work tool steel bar, also known as 105WCr6, AISI O7 and UNS T31507. It is used for punches, blanking dies, thread forming tools, cutters, reamers, gauges, knives and precision tools.
Q2: Is DIN 1.2419 the same as AISI O7?
DIN 1.2419 / 105WCr6 is commonly cross-referenced with AISI O7 / UNS T31507 oil-hardening cold work tool steel. For critical orders, chemical composition, standard and heat treatment requirements should be confirmed before production.
Q3: What is the main advantage of O7 tool steel?
O7 tool steel offers good wear resistance, cutting edge stability and dimensional accuracy after oil hardening. It is suitable for precision tools, gauges, knives, cutters and cold work die parts.
Q4: What hardness can DIN 1.2419 reach after heat treatment?
DIN 1.2419 / O7 can generally reach about 54 – 64 HRC after suitable oil hardening and tempering. Final hardness depends on section size, quenching condition, tempering temperature and application requirements.
Q5: Can SAKY STEEL provide DIN 1.2419 Bar with MTC?
Yes. SAKY STEEL can provide MTC (Mill Test Certificate / 质保书), EN 10204 3.1 certificate, hardness report, UT report, PMI report and third-party inspection documents according to customer requirements.
Q6: What sizes of O7 Tool Steel Bar are available?
Common O7 tool steel round bar diameters range from 6 mm to 300 mm. Flat bar, square bar, forged bar and cut-to-size tool steel blocks can also be supplied according to drawings.
Q7: Is DIN 1.2419 easy to machine?
DIN 1.2419 has good machinability in annealed condition. It is recommended to complete most machining before final oil hardening and tempering to reduce tool wear and dimensional correction.
Q8: Can DIN 1.2419 be welded?
Welding is not usually preferred for O7 cold work tool steel because of cracking and hardness change risk. If welding is required, preheating, suitable filler and post-weld heat treatment should be considered.
Q9: What applications use DIN 1.2419 O7 Tool Steel Bar?
DIN 1.2419 O7 Bar is used for punches, blanking dies, thread forming tools, cutters, reamers, gauges, knives, woodworking tools, shape knives and precision cold work tooling components.
Q10: How can I get a quotation for DIN 1.2419 O7 Tool Steel Bar?
Please send your required grade, diameter or flat bar size, length, quantity, surface finish, tolerance, supply condition, heat treatment requirement and certificate requirements to SAKY STEEL. Our team will check availability, production route, delivery time and price for your project.