Introduction
D2 инструментальная сталь is one of the most widely used cold work инструментальная стальs for cutting tools, forming dies, punches, knives and wear-resistant components. Many покупатели source D2 инструментальная сталь from Китай because of competitive pricing, flexible size supply and available processing service.
However, buying D2 инструментальная сталь is not only about finding the lowest цена. International покупатели should check the grade standard, equivalent grades, size range, surface condition, hardness, сертификат испытаний материала, ultrasonic testing, packing and delivery details before confirming an order.
This guide explains the key points you should check when buying D2 инструментальная сталь from Китай.
1. What Is D2 Инструментальная сталь?
D2 is a high-carbon, high-chromium cold work инструментальная сталь. It offers good wear resistance, good hardness after heat treatment and suitable toughness for many cold work tooling applications.
- Резка dies
- Blanking dies
- Forming dies
- Punches
- Slitting knives
- Shear blades
- Thread rolling dies
- Wear-resistant tooling parts
- Industrial knives
- Cold work mold components
2. D2 Эквивалентные марки
| Стандарт / Region | Марка |
|---|---|
| AISI / ASTM | D2 |
| DIN / W.Nr. | 1.2379 |
| EN / DIN Name | X153CrMoV12 |
| JIS | SKD11 |
| GB | Cr12Mo1V1 |
In international trade, D2, 1.2379 and SKD11 are often treated as equivalent grades. However, покупатели should always confirm the required standard, chemical composition and final application before placing an order.
3. Is D2 the Same as SKD11 or 1.2379?
D2, SKD11 and 1.2379 are similar cold work инструментальная стальs, but they are not automatically identical in every order.
- Different national standards
- Slightly different chemical composition ranges
- Different mill control levels
- Different heat treatment requirements
- Different inspection requirements
- Different customer approval requirements
For general cold work applications, these grades may be interchangeable. For precision tooling, long-life dies or customer-specific projects, the buyer should confirm the exact required standard in advance.
4. Typical Химический состав
The following table is a general reference for D2 / 1.2379 / SKD11 type cold work инструментальная сталь. Actual values should be confirmed by the applicable standard and сертификат испытаний материала.
| Элемент | Typical Range |
|---|---|
| Carbon C | Around 1.40-1.60% |
| Chromium Cr | Around 11.00-13.00% |
| Molybdenum Mo | Around 0.70-1.20% |
| Vanadium V | Around 0.50-1.10% |
| Manganese Mn | Around 0.20-0.60% |
| Silicon Si | Around 0.10-0.60% |
High carbon and high chromium content give D2 good wear resistance and high hardness potential after heat treatment. Do not use this table as the only purchase standard. For official orders, the buyer should refer to the required standard and MTC.
5. Common Форма поставкиs
- Steel плита
- Round bar
- Flat bar
- Блок
- Резка по размеру pieces
- Milled плита
- Ground плита
- Annealed material
- Heat-treated material upon request
6. Size Information Покупатели Should Provide
Size is one of the most important details when buying D2 инструментальная сталь. A clear запрос should include thickness, width, length, diameter for круглый пруток, quantity, number of pieces, cutting tolerance, machining allowance and required surface condition.
Example запрос:
D2 / 1.2379 steel плита, 50 x 300 x 500 mm, 20 pieces, annealed condition, milled surface, delivery to Hamburg Port.
This kind of запрос allows the поставщик to calculate вес, check склад, estimate processing time and provide a more accurate коммерческое предложение.
7. Поверхность Состояние Options
| Поверхность Состояние | Description |
|---|---|
| Black surface | Hot rolled or forged surface, usually lower cost |
| Milled surface | Поверхность machined by milling, better for mold preparation |
| Ground surface | Higher precision and better surface finish |
| Peeled круглый пруток | Common for круглый прутокs |
| Cut surface | Material cut according to requested size |
The surface condition should be confirmed before ordering. Otherwise, the buyer may receive material that is technically correct but not suitable for immediate use.
8. Состояние поставки and Hardness
| Состояние поставки | Notes |
|---|---|
| Annealed | Easier for machining and further heat treatment |
| Pre-machined | Cut, milled or ground according to buyer size |
| Heat treated | Supplied according to hardness requirement |
| Stress relieved | Used when dimensional stability is important |
- Is the material annealed?
- What is the current hardness range?
- Do you need final heat treatment?
- What final HRC is required?
- Is stress relieving required?
- Will the material be machined before or after heat treatment?
9. Термообработка Notes
D2 steel performance depends heavily on correct heat treatment. A wrong heat treatment process may lead to cracking, excessive brittleness, poor wear resistance, size distortion, short tool life or early failure during use.
- Preheating process
- Austenitizing temperature
- Quenching medium
- Tempering temperature
- Number of tempering cycles
- Required final hardness
- Dimensional tolerance after heat treatment
- Whether deep cryogenic treatment is required
10. MTC: Why It Matters
MTC means сертификат испытаний материала. It is one of the most important documents when buying инструментальная сталь internationally.
- Марка стали
- Heat number
- Chemical composition
- Стандарт
- Size
- Delivery condition
- Test result
- Traceability
If a поставщик cannot provide MTC, the buyer should be careful. For инструментальная сталь, documents are not optional. They are part of the material value.
11. Ультразвуковой контроль
For thick D2 плитаs, large блокs or important tooling components, ultrasonic testing may be required. UT testing helps check internal defects such as cracks, voids, inclusions and internal discontinuities.
Покупатели should specify the required UT standard and testing level before ordering.
12. Packing Requirements
- Rust protection
- Oil coating
- Plastic wrapping
- Wooden case or steel frame
- Bundling method
- Marking
- Heat number identification
- Gross вес and net вес
- Loading photos before shipment
For sea shipment, rust prevention is especially important. A good поставщик should provide packing photos before shipment.
13. Delivery Time
Delivery time depends on склад condition and processing requirements.
- Whether the material is in склад
- Резка quantity
- Фрезеровка or grinding requirement
- Heat treatment requirement
- Inspection requirement
- Packing method
- Export document preparation
- Shipping method
Покупатели should ask for both production / preparation time and estimated shipping time.
14. Price Factors for D2 Инструментальная сталь
D2 инструментальная сталь цена is affected by grade standard, steel form, size, quantity, surface condition, processing requirement, heat treatment, testing requirement, packing requirement, delivery term and shipping destination.
A professional коммерческое предложение should clearly show grade, size, quantity, вес, unit цена, total amount, surface condition, delivery condition, documents, packing, trade term and lead time.
15. Questions to Ask Before Ordering D2 from Китай
- Can you supply D2 according to the required standard?
- Is 1.2379 or SKD11 acceptable as an equivalent?
- What sizes are available in склад?
- Can you cut according to my size list?
- What is the surface condition?
- Is the material annealed?
- What is the current hardness range?
- Can you provide MTC?
- Can you provide UT testing if required?
- Can you provide packing photos before shipment?
- What is the estimated вес?
- What is the срок поставки?
- What is the trade term?
- Which port can you ship from?
- Can you support mixed grades in one shipment?
16. Common Mistakes When Buying D2 Инструментальная сталь
- Only comparing the lowest цена
- Not confirming equivalent grade approval
- Not asking for MTC
- Not confirming annealed or heat-treated condition
- Ignoring surface condition
- Not specifying cutting tolerance
- Not confirming packing method
- Not asking for shipment photos
- Not checking whether UT testing is needed
- Not calculating machining allowance
- Not confirming actual вес tolerance
17. A Better D2 Запрос Temплита
Марка стали: D2 / 1.2379 / SKD11
Стандарт: AISI / DIN / JIS, if required
Form: Плита / круглый пруток / flat bar / блок
Size: Thickness x width x length, or diameter x length
Количество: Pieces or total вес
Состояние: Annealed / heat treated
Поверхность: Black / milled / ground / peeled
Hardness: Required hardness if any
Testing: MTC / UT / hardness test
Packing: Export packing / wooden case / steel frame
Destination: Country and port
Trade term: FOB / CIF / CFR / DDP if required
Application: Резка die / punch / knife / mold component
18. How Haoyuan Special Steel Supports D2 Покупатели
Haoyuan Special Steel supplies D2 / 1.2379 / SKD11 cold work инструментальная сталь for international покупатели.
- Марка comparison
- Stock checking
- Weight calculation
- Резка to size
- Фрезеровка and grinding
- Heat treatment support
- Hardness test
- сертификат испытаний материала
- Ultrasonic testing upon request
- Export packing
- Packing photos
- Shipment coordination
Conclusion
Buying D2 инструментальная сталь from Китай can be efficient and cost-effective, but покупатели should not focus only on цена. Before ordering, покупатели should confirm the steel grade, equivalent standard, size, surface condition, delivery condition, hardness, MTC, testing requirement, packing and срок поставки.
If you are looking for D2 / 1.2379 / SKD11 инструментальная сталь плитаs, круглый прутокs or cut-to-size materials from Китай, send your size list and technical requirements to Haoyuan Special Steel for коммерческое предложение.
Запросить предложение
Looking for D2 / 1.2379 / SKD11 инструментальная сталь from Китай? Please send us steel grade, size or drawing, quantity, surface condition, hardness requirement, required documents and destination port.
Haoyuan Special Steel will check склад, calculate вес and provide коммерческое предложение with срок поставки.
Узнать актуальную ценуFAQ
1. What is D2 инструментальная сталь used for?
D2 инструментальная сталь is commonly used for cutting dies, punches, forming dies, slitting knives, shear blades, thread rolling dies and wear-resistant tooling parts.
2. Is D2 the same as 1.2379?
D2 and 1.2379 are commonly treated as equivalent cold work инструментальная стальs, but they belong to different standards. Покупатели should confirm the required standard, composition and MTC before ordering.
3. Is D2 the same as SKD11?
D2 and SKD11 are similar cold work инструментальная сталь grades. In many cases they can be used as equivalents, but final acceptance depends on the drawing, standard and customer approval.
4. Can D2 инструментальная сталь be supplied резка по размеру?
Yes. D2 инструментальная сталь can be supplied as плитаs, круглый прутокs, flat bars, блокs and cut-to-size pieces according to customer requirements.
5. What documents should I ask for when buying D2 steel?
Покупатели should ask for сертификат испытаний материала, chemical composition report, hardness test, ultrasonic testing if required, dimension inspection and packing photos before shipment.
6. What surface condition is available for D2 steel?
Common surface conditions include black surface, milled surface, ground surface, peeled круглый пруток and cut-to-size condition.
7. Should I buy D2 in annealed or heat-treated condition?
If the buyer needs machining before final heat treatment, annealed condition is usually preferred. If the buyer needs ready-to-use hardness, heat-treated condition should be specified clearly.
8. What information should I provide for a D2 коммерческое предложение?
You should provide grade, size, quantity, surface condition, delivery condition, hardness requirement, testing requirement and destination port.