Aobo Steel | Global Tool Steel Supplier in China
1.2379 Round Bar Supplier for Bulk Industrial Orders
Aobo Steel supplies 1.2379 round bar to distributors, stockists, and industrial importers who need practical bulk supply, export-ready lengths, clear delivery terms, and reliable RFQ support.
DIN 1.2379 is widely known as the European equivalent of D2 and is commonly associated with SKD11 in the Japanese standard system. When making actual purchases, buyers usually care more about the available size range, export length, surface condition, and supply reliability than about generic material descriptions.
Supply Overview
| Grade | DIN 1.2379 |
|---|---|
| Equivalent Grades | D2, SKD11, Cr12Mo1V1 |
| Product Form | Round Bar |
| Diameter Range | 12–800 mm |
| Length | 2–5.5 m random mill length |
| Surface | Black, rough machined, peeled, turned |
| Delivery Condition | Usually annealed for machining |
| MOQ | 5 tons |
| Documents | MTC available per order |
| UT Option | Can be discussed according to project requirements |
Why Global Distributors Source 1.2379 round bar from Aobo Steel
- Continuous monthly supply of around 1000 tons
- MOQ from 5 tons for wholesale orders
- Container-optimized bar and plate lengths
- Mixed sizes are supported for export loading
- Annealed delivery for downstream machining
- Stable sourcing through integrated supply chain partners
- UT inspection available to SEP 1921-82 D/d or E/e
- MTC and batch traceability with each shipment
- Heat number tracking for order control
- Black, turned, and polished surface options
- Bulk export packing for sea shipment
- Clear conversion path to the dedicated bulk supply page
Stable Production for Long-Term Bulk Supply
- Continuous production cycles for inventory replenishment
- ESR (Electro-Slag Remelting) is available upon request
- Stable alloy sourcing to reduce supply interruption risk
- Full batch traceability linked to the original heat number
Quality Control for Bulk Orders
Every batch of tool steel supplied by Aobo Steel is verified before shipment to ensure grade accuracy, internal soundness, and traceability for bulk orders.
- Chemical composition verified by a spectrometer
- Ultrasonic testing available (SEP 1921-82)
- Delivered in spheroidized annealed condition
- Mill Test Certificate (EN 10204 3.1) with heat number
- Dimensional and surface inspection before shipment
Export Packaging and Container Loading
- Professional seaworthy export packing
- 20GP loading optimized up to ~26 tons
- Mixed grades and mixed sizes supported
- Anti-rust protection for long sea transit
For international shipments, full-container loading is strongly recommended to ensure cost efficiency and smoother customs processing.
1.2379 Chemical Composition
| C | Si | Mn | Cr | Mo | V | P | S | |
| Germany/W-Nr. 1.2379 | 1.45 – 1.60% | 0.10 – 0.60% | 0.20 – 0.60% | 11.00 – 13.00% | 0.70 – 1.00% | 0.70 – 1.00% | ≤0.030% | ≤0.030% |
Typical Applications of 1.2379 Tool Steel Round Bar
| Application Area | Typical Components (From Round Bar) | Key Working Condition | Why Use 1.2379 (D2) |
| Cold Punching & Blanking | Punches, die inserts, slitter knives, shear blades | High-cycle stamping, severe abrasive wear | High volume of primary chromium carbides ensures superior edge retention and extends tool life in mass production. |
| Cold Forming & Drawing | Drawing dies, drawing rings, extrusion mandrels | High compressive stress and heavy surface friction | Exceptional compressive strength; maintains precise geometry under extreme loads and resists galling or surface damage. |
| Thread Rolling & Precision Forming | Thread rolling dies, forming rolls, knurling tools | Continuous contact pressure and cyclic loading | Excellent dimensional stability during heat treatment allows for high-precision thread profiles and maximum service life. |
| Industrial Cutting (Abrasive Media) | Woodworking tools, paper/plastic knives, specialized broaches | Processing abrasive materials at moderate cutting speeds | Outperforms low-alloy steels due to its secondary hardening potential and matrix hardness; ideal for non-metallic processing. |
| Precision Wear Components | Gauges, bushings, guide centers, wear plates | Constant friction and requirement for long-term accuracy | Minimizes dimensional wear over long service cycles, significantly lowering maintenance and replacement frequency for end-users. |
| Abrasive Industrial Tooling | Ceramic molds, brick molds, powder compacting tools | Extreme abrasive environments with particle erosion | The carbide-rich microstructure acts as a physical barrier against erosive particles, preventing premature mold wash-out. |
| Semi-Hot Working (Limited) | Hot trimming dies, hot sizing tools (Temp < 400℃) | Moderate temperature exposure with high friction | Retains higher hardness than standard cold-work steels at slightly elevated temperatures (up to 400℃) due to its alloy composition. |
Request a Quote for 1.2379 Round Bar
If you are sourcing DIN 1.2379 round bar, D2 round bar, or SKD11 round bar for bulk purchase, send your required size, quantity, and destination port. Aobo Steel will quote based on practical supply conditions instead of vague catalog language.