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H13
Qilu
Product Description
Hot forged and hot rolled H13 round bar and blocks, supplied annealed for machining or quenched & tempered to 44–52 HRC, with heat treatment and ultrasonic testing done in our own workshop.
Equivalent to: DIN 1.2344 / X40CrMoV5-1 · JIS SKD61 · GB 4Cr5MoSiV1 · BS BH13
H13 Steel Stock in Warehouse
Supply form — Round bar, flats, plates and blocks
Process — Hot forged / hot rolled, machined to size on request
Condition — Annealed (≤ 229 HB) for machining, or QT to 44–52 HRC
Standard — ASTM A681
Certificate — EN 10204 3.1 standard, 3.2 on request
UT testing — 100 % ultrasonic per ASTM A388 / EN 10228-3 on request
Lead time — 15–30 days depending on size and heat treatment
H13 is the chromium-molybdenum-vanadium hot work steel from ASTM A681. About 5 % chromium gives it resistance to thermal fatigue (heat checking), while vanadium forms hard carbides that keep the surface from eroding at working temperature — the combination that makes it the standard grade for aluminium die-casting dies worldwide.
Grade | C | Si | Mn | P | S | Cr | Mo | V |
H13 | 0.32-0.45 | 0.80-1.20 | 0.20-0.50 | 0.030 | 0.030 | 4.75-5.50 | 1.10-1.75 | 0.80-1.20 |
Values below are typical. For tooling we normally deliver annealed and you harden after rough machining; where you need pre-hardened blocks we quench and temper to your target hardness before shipment.
Grade | H+T | Tensile strength | Yield strength | Elongation | Reduction | Impact Value | Hardness/HB |
| H13 | +A | / | / | / | / | / | 180 |
H13 | +QT | 821 | 730 | 12 | 56 | 79/92/95 | 265/290/284 |
Country | Japan | Germany | China | USA |
Standard | JIS G4404 | EN ISO4957 | GB/T1299 | ASTM A681 |
Grade | SKD61 | 1.2344/X40CrMoV5-1 | 4Cr5MoSiV1 | H13 |
Die casting — aluminium die-casting dies, inserts, cores and sprue bushings
Extrusion — extrusion tooling, liners and stems for aluminium and copper
Hot forging — forging dies and die inserts for hammer and press lines
Plastics and general tooling — injection mold cavities, hot shear blades, gripper rails
H13 is supplied annealed so you can machine it easily, then hardened from 1000–1030 °C and double tempered in the 540–600 °C range to reach 44–52 HRC. Double tempering is important: it transforms retained austenite and stabilises dimension, which is what keeps die inserts from distorting in service. We can also supply pre-hardened and rough-machined blocks so you go straight to finish machining.
Most suppliers in this business are traders who subcontract everything. We run our own processes, which means shorter cycles and one point of accountability when something needs fixing.
Heat treatment shop — quenching and tempering to your target hardness, with furnace charts recorded per batch
Machining shop — rough turning, peeling and cutting to length, so your bar arrives ready for finish machining
Testing — ultrasonic per ASTM A388 / EN 10228-3, hardness mapping across the section, tensile and impact testing
Certification — EN 10204 3.1 as standard, 3.2 available with third-party witness (ABS, BV, CCS, GL)
Export packing — bundled, end-capped and rust-protected for sea freight
A1: They are the same family: 1.2344 (X40CrMoV5-1) is the DIN equivalent and SKD61 the JIS equivalent, both matched to H13 in composition. Minor differences exist in the allowed ranges — if your tooling drawing specifies one grade, send it to us and we will confirm the closest supply option.
A2: Yes. We quench and temper in our own furnace shop to 44–52 HRC or any intermediate range, with hardness verified at multiple points and furnace charts recorded per batch. Pre-hardened blocks arrive ready for finish machining.
A3: EN 10204 3.1 mill certificate is included as standard, showing full heat analysis and mechanical test results. If you need 3.2 certification we arrange third-party inspection with ABS, BV, CCS or GL.
A4: Yes. Our machining shop does rough turning, peeling, milling and cutting to length, so you receive material close to final dimensions and save machining time on your side.
Send us your diameter, length, quantity, required hardness and destination port. You will get a quotation with the full technical proposal within 24 hours.
