Bulk Tool Steel Supply From China
Cold work, hot work, mold, and bearing tool steels in round bar, flat bar, plate, and forged blocks, supplied annealed to distributors, stockists, importers, and manufacturers worldwide. Every order is tied to a mill certificate per heat number, in-house inspection records, and a verification sheet you can check against the material you receive.
Send your grade, size, and quantity and we come back with availability, lead time, and price.
What to Send for a Fast Quote
Six details are enough for us to check availability, feasibility, quality control scope, and the shipment plan. Send what you have now and we will confirm the rest with you.
Send Your Requirement
Paste the list above into the message box, or simply describe the material you need.
All submitted information is used for the quotation only and is never shared with third parties.
Who we are. Aobo Steel began in 2003 as a tool steel forging and processing operation in Huangshi, China, and has supplied overseas buyers since 2017. We work sourcing, quality control, and export through the mill and processing network built over the past two decades, and we currently supply buyers in the Czech Republic, Brazil, the Philippines, India, and other markets.
Grades, Forms, and Delivery Condition
Our scope covers cold work, hot work, shock resisting, plastic mold, bearing, and high speed tool steels, supplied as raw material for machining, stocking, resale, and later heat treatment. The full grade list with equivalents and page links is in the tool steel catalog, and the material finder narrows it down by application. Ring blanks are forged to shape with a pierced bore and discs are forged solid, so the grain flow stays continuous through heavy sections.
Cold Work and Core Grades
- D2 / 1.2379 / SKD11
- D3 / 1.2080 / SKD1
- D6 / 1.2436 / SKD2
- A2 / 1.2363 / SKD12
- O1 / 1.2510 · O2 / 1.2842
- S1 / 1.2550 · S7 / 1.2355
- DC53 · Cr12 / Cr12MoV / Cr12Mo1V1
Hot Work and Mold Steel
- H11 / 1.2343 / SKD6
- H13 / 1.2344 / SKD61
- H10 / 1.2365 · H21 / 1.2581
- L6 / 1.2714
- P20 / 1.2311
- P20+Ni / 1.2738
High Speed and Bearing Steel
- M2 / 1.3343 / SKH51
- M35 / 1.3243 / SKH55
- M42 / 1.3247 / SKH59
- 52100 / 1.3505 / 100Cr6
- GCr15
| Supply Form | Surface and Condition | Typical Use |
|---|---|---|
| Round bar | Black, peeled, or turned | Machining, resale, mold and tooling parts, later heat treatment |
| Flat bar and plate | Black or milled, per order | Die plates, mold plates, inserts, blocks, machining stock |
| Forged block | Per grade, size, and inspection requirement | Large section tooling and special sizes |
| Forged ring | Forged to shape with pierced bore | Bearing races, gear blanks, die and mold rings |
| Forged disc | Solid forged disc or round block | Die blocks, mold bases, large diameter tooling |
| Delivery condition | Annealed or agreed condition | Ready for cutting, milling, grinding, and final heat treatment by the customer |
| Length | Usually about 2 to 5.5 m for export loading | Matched to container length and warehouse handling |
Forged ring blanks. Individually forged with a pierced bore for bearing races, gears, and die rings.
Forged disc and round block. Solid forged to shape for die blocks, mold bases, and large diameter tooling.What You Receive With Every Shipment
Every order is tied to its grade identity, heat number, and inspection records before it leaves the works. The full control process is on the quality control page.
Documents that travel with the goods
- Mill certificate per order, matching the heat number on the material
- Supply and inspection verification sheet for the shipment
- Packing list with grade, size, and piece counts
- Loading photos before the container is sealed
- Equivalent grade confirmation when your drawing uses another standard
Working in DIN, JIS, or GB instead of AISI? Check the equivalent grades chart before you send the inquiry.
Packed, Labeled, and Loaded for Long Distance Shipping
We plan rust prevention, edge protection, labeling, and container loading so the material arrives clean and easy to classify. Anti-rust oil as standard, VCI packaging on request, strong strapping, and a 20GP load of up to around 26 tons depending on size.
Packed and labeled tool steel prepared for export.
Bars secured inside the container for safe transport.
Container level loading for bulk export orders.Order Size, Size Range, and Lead Time
The numbers buyers usually ask for before they send a drawing. Size range, tolerance, and lead time detail are collected on the bulk supply capability page, and order weights can be checked with the steel weight calculator.
| Item | Typical | Note |
|---|---|---|
| MOQ | Around 5 tons | Suited to trial orders, distributor replenishment, and project batches |
| Round bar | Approx. 8 to 800 mm diameter | Turned or peeled generally 0 / +1 mm |
| Flat bar and plate | Common bulk sizes by thickness, width, and length | Milled thickness generally 0 / +1 mm |
| Black surface material | Bars and plates in black surface | Machining allowance such as 0 / +5 mm |
| Container loading | Up to around 26 tons in a 20GP | Mixed grades and sizes can share one shipment when the plan is workable |
| Lead time, forged | Usually around 30 days | By grade and size |
| Lead time, hot rolled and ESR | Usually 45 to 60 days | Large sections, special grades, or UT may need extra planning |
| Delivery condition | Annealed or agreed condition | Hardness range confirmed against your later heat treatment |
From Inquiry to Shipment
One sequence runs behind every order, whether it is a first trial batch or a repeat container.
Questions Buyers Ask Before the First Order
What is the minimum order quantity?
Around 5 tons for export. That suits a trial order or a distributor replenishment batch, and several grades or sizes can share one shipment when the total quantity and loading plan work.
Which certificate do I get with the material?
A mill certificate to EN 10204 3.1 covering chemical composition and heat number, plus our supply and inspection verification sheet for the shipment. UT to an agreed level and third party re-checks are available on request.
Can you supply material to my standard instead of AISI?
Yes. We work in AISI, DIN, JIS, and GB, so an order placed as 1.2379, SKD11, or Cr12MoV is matched to the same material and confirmed on the certificate.
What lead time should I plan for?
Forged tool steel is usually around 30 days, and hot rolled or ESR material usually 45 to 60 days, both depending on grade and size. Large sections, special grades, and UT testing are confirmed case by case before we commit to a date.
Do you supply annealed material only?
Material ships annealed or in an agreed condition, ready for cutting, milling, grinding, and final heat treatment on your side. Hardness range is confirmed against the later heat treatment you plan.
How is the material packed for a sea shipment?
Anti-rust oil as standard and VCI packaging on request, with edge protection, strapping, and labels that separate grades, sizes, and surface conditions. Loading photos are taken before the container is sealed.
Can you supply forged rings and discs instead of bar?
Yes. Ring blanks are forged with a pierced bore and discs are forged solid to shape, which keeps the grain flow continuous for bearing races, gear blanks, die blocks, and large diameter tooling.
How do I start an inquiry?
Send grades, forms, sizes, quantities, and the destination port by email or WhatsApp, or use the form on this page. We reply with availability, feasibility, and the next step for the specific material.
Need Bulk Tool Steel Supply From China?
Send your required grade, size, quantity, surface condition, inspection and certificate requirement, and destination port. We will check availability, feasibility, quality control scope, and your export plan.
Email [email protected] or message WhatsApp +86 180 6294 5370.