The main content of this article has two parts: countries steel code, common imported mold steel and its parameters performance, read it can learn a lot.
I. Steel code by country (standard)
1、American Standard AISI
2、German standard DIN
3、Japanese Standard JIS
Common imported mold steel and its parameters performance
1、Sweden ASSAB STAVAXESR-S136 - high wear resistance and corrosion resistance pre-hardened mirror steel
Factory condition: HB215
Equivalent to Buderus standard: 2316
Equivalent to Bohler standard: M310
Equivalent to Hitachi hitachi standard: HPM38
Equivalent to DAIDO standard: PAK90
Abrasion resistance: ★★★☆☆
Toughness: ★★★☆☆
Dimensional stability: ★★★☆☆
Machinability: ★★★☆☆
Polishability: ★★★★★
Corrosion resistance: ★★★★☆
Product Description
High grade stainless tool steel.
Excellent corrosion resistance, polishability, wear resistance, machinability, EDM can obtain super mirror finish and high quality surface, excellent stability during quenching.
The surface of the die cavity remains smooth after long-term use.
No special protection is needed when the mold is operated or stored in a humid environment. It is recommended for injection molds with high polishing requirements and corrosive plastic molds.
2、Sweden ASSAB 8402 - High quality hot work tool steel
Factory condition: HB 185
Equivalent to Buderus: 2344
Equivalent to Bohler standard: W302
Equivalent to Hitachi hitachi standard: DAC
Equivalent to DAIDO standard: DHA1
Abrasion resistance: ★★☆☆☆
Toughness: ★★★☆☆
Hardenability: ★★★☆☆
Machinability: ★★★☆☆
Product description
High and low temperature have good wear resistance, excellent toughness and ductility, stable and excellent and processing and polishing, excellent high temperature strength and thermal fatigue resistance, excellent hardenability, very small heat treatment size deformation.
Used in metal hot forging die, aluminum extrusion die, plastic die, aluminum die-casting die, etc.
3、ASSAB 8407 - Premium Hot Work Tool Steel
Factory condition: HB 185
Equivalent to Buderus: 2344ESR
Equivalent to Hitachi hitachi standard: DAC
Equivalent to DAIDO standard: DHA1
Abrasion resistance: ★★★☆☆
Toughness: ★★★☆☆
Hardenability: ★★★☆☆
Machinability: ★★★★☆
Product Description
8407 is a chromium, molybdenum and vanadium alloyed tool steel with high purity and microstructure obtained by special steelmaking techniques and close quality control. 8407 has better isotropy (isotropy) than conventional H13.
This is valuable for the resistance to mechanical fatigue and thermal stress fatigue in dies and molds, such as die casting dies, forging dies and extrusion dies, etc. Therefore, the hardness of dies and molds made from 8407 can be increased by 1-2 HRC compared to conventional H13 without sacrificing toughness.
The high hardness can slow down the occurrence of thermal cracking and improve the die life. It is used in various metal die-casting dies, extrusion dies, and plastic dies with high quality requirements.
4、ASSAB ASP23 - High wear resistance and high toughness powdered high speed steel
Factory condition: HB 260
Equivalent to Hitachi hitachi standard: HAP10
Abrasion resistance: ★★★★☆
Toughness: ★★★☆☆
Dimensional Stability: ★★★☆☆
Machinability: ★★★☆☆
Product description
It is a chromium-molybdenum-vanadium powder steel with high wear resistance (resistance to abrasive wear), high compressive strength, very good hardenability, good toughness, good dimensional stability in heat treatment, and good resistance to tempering and softening.
ASP-23 is particularly suitable for undercutting and forming of thin machined materials, or where die failure is due to mixed abrasive wear and adhesive wear, or where there is a high risk of plastic deformation of the surface due to intellectual abrasive wear. Examples are the undercutting of medium or high carbon steel, punching of hardened steel plates or cold rolled steel strips, and plastic dies containing glass fibers.
5、ASSAB XW-42 - High grade, high wear resistant cold work tool steel
Factory condition: HB210
Buderus equivalent: 2379
Equivalent to Bohler standard: K110
Hitachi Hitachi Hitachi Standard: SLD
Equivalent to DAIDO standard: DC11
Abrasion resistance: ★★★☆☆
Toughness: ★★★☆☆
Dimensional Stability:★★★☆☆
Machinability: ★★★☆☆
Product description
It is a high-carbon, high-chromium alloy tool steel containing molybdenum and vanadium. With both wear resistance and toughness, excellent quenching properties, it is often recommended for molds that require good wear resistance and proper toughness (impact resistance). For example: precision hardware molds, semiconductor molds, precision parts, etc.
6、ASSAB 718HH - High-polish pre-hardened precision plastic mould steel
Factory condition: Pre-hardened HB 330-370
Equivalent to Buderus standard: 2711
Wear resistance: ★★★☆☆
Toughness: ★★★☆☆
Machinability: ★★★☆☆
Polishability: ★★★★☆
Corrosion resistance: ★★★☆☆
Product Description
It is a vacuum melting chromium-nickel-molybdenum alloy steel, improved pre-hardened plastic mold steel, factory hardened and tempered, no risk of hardening and heat treatment deformation, no heat treatment, nitriding and flame hardening treatment can be applied to improve the surface hardness and wear resistance of the mold.
Very good polishability and improved wear resistance.
Used for thermoplastic material injection and extrusion molds, plastic product molds with high surface finish, blow molding molds, forming molds, structural parts, shafts.
7、ASSAB VIKING - High wear resistance and high toughness cold work tool steel
Factory condition: HB225
Wear resistance: ★★★☆☆
Toughness: ★★★★☆
Dimensional Stability: ★★★☆☆
Machinability: ★★★☆☆
Product description
Good heat treatment dimensional stability, good machinability, combined with excellent toughness and good wear resistance.
It is used in fine blanking dies, cutting edge dies, deep drawing dies, cold forging dies, etc.
8、Japan Daido NAK80 - Pre-hardened mirror finish precision plastic mold steel
Factory condition: HRC37-43
Equivalent to Hitachi hitachi standard: HPM50
Abrasion resistance:★★★☆☆
Toughness: ★★★☆☆
Machinability: ★★★☆☆
Polishability: ★★★★☆
Corrosion resistance: ★★★☆☆
Product description
Pre-hardened steel (36-43 HRC), no heat treatment, can be processed directly; surface and center hardness is more uniform, good machinability; good electrical discharge machining, grinding after electrical discharge machining is very easy, because the surface hardness after electrical discharge machining is uniform and the white layer hardness is low; good mirror polishing; good weldability; good etching; dimensional stability, suitable for precision parts and mass production.
Due to the influence of its chemical composition, this material is more brittle, easy to crack in the more complex molds where the processing stress is more concentrated. Heat sensitivity is high, where in the welding to preheat, insulation and post-welding heat and stress relief tempering treatment, otherwise there will be a risk of welding failure. It is important to note that when the processing temperature exceeds 520 ℃, it will cause dimensional changes.
9、Nippon Daido DC53 - High hardness and toughness cold work tool steel
Nippon Daido DC53 – High hardness and toughness cold work tool steel
Factory condition: HB255
Hitachi hitachi standard: SLD8
ASSAB standard: ASSAB88
Wear resistance: ★★★☆☆☆☆
Toughness: ★★★★☆
Dimensional Stability: ★★☆☆☆
Machinability: ★★★☆☆
Polishability: ★★★☆☆
Product description
Daido steel DC53 is improved on the basis of SKD11, the hardness after heat treatment is higher than SKD11, high temperature (520-530℃) after tempering can reach 62-63HRC high hardness, in terms of strength than SKD11, toughness is twice as much as SKD11.
Toughness is more prominent in cold work die steel, therefore, few cracks and chipping occur with DC53 manufacturing, which greatly improves the service life.
The residual stress after wire cutting process is reduced by high temperature tempering, therefore, the cracking and deformation of large dies and dies requiring precision are suppressed after wire cutting process.
Cutting performance exceeds that of SDK11. DC53 has better cutting performance than SDK11, therefore, using DC53 can increase die life and reduce machining process.
10、Nippon Daido NAK55 - High pre-hardened high performance precision mould steel
Factory condition: HRC37-43
Wear resistance: ★★★☆☆
Toughness: ★★★☆☆
Machinability: ★★★☆☆
Polishability: ★★★★☆
Product Description
Hardened steel, without any heat treatment, pre-hardened steel suitable for mirror polishing process.
Mainly used for mirror polishing moulds, excellent polishability, good cutting and etching properties.
11、Nippon Daido NAK55 - High pre-hardened high performance precision mould steel
Factory condition: HRC30-34
Buderus equivalent: X40Cr13
Hitachi Hitachi standard: HPM38
ASSAB standard: S136
Abrasion resistance:★★★☆☆
Dimensional Stability: ★★★★☆
Machinability: ★★★★☆
Polishability: ★★★★★
Corrosion resistance: ★★★★☆
Product description
Pre-hardened corrosion resistant high polished stainless steel, high polishability, good corrosion resistance, good wear resistance, good dimensional stability, suitable for the requirements of high mirror, high wear resistance, corrosion resistant molds. For example: rubber molds, VCD disc molds, cosmetic containers, and medical equipment tools, etc.
12、Nippon Daido DHA1 - High Performance Hot Work Tool Steel JIS SKD61
Factory condition: HB229
Buderus equivalent: 2344
Equivalent to Bohler standard: W302
Equivalent to Hitachi hitachi standard: DAC
Equivalent to ASSAB standard: 8402
Abrasion resistance: ★★★☆☆
Toughness: ★★★☆☆
Red-hardness: ★★★☆☆
Dimensional Stability:★★★☆☆
Workability: ★★★☆☆
Polishability: ★★☆☆☆
Product description
Daido Steel DHA1 is widely used in aluminum and magnesium die casting molds. It has good machinability and heat resistance balance, etc. It is a general hot work steel. DHA1 is used in aluminum and magnesium die-casting dies, die-casting die related parts, hot stamping dies, hot extrusion dies, hot shear inserts.
13、JAPAN Daido DC11 - High hardness, high wear resistance, high chromium tool steel JIS SKD11
Factory condition: HB255
Equivalent to Buderus standard: 2379
Equivalent to Bohler standard: K110
Equivalent to Hitachi hitachi standard: SLD
Equivalent to ASSAB standard: XW-42
Abrasion resistance: ★★★☆☆
Toughness: ★★★☆☆
Dimensional Stability: ★★★☆☆
Workability: ★★★☆☆
Product description
Long life, high wear resistance, high toughness, impact resistance, heat treatment is not easy to deformation, fine structure, mainly used for punching dies, precision hardware stamping dies, cold forming dies, cold drawing dies, forming rolls, punches.
14、Japan Hitachi Metals HPM1 - Advanced Pre-hardened Die Steel
Brand: JAPAN HITACHI METAL
Factory condition: HRC37-42
Equivalent to DAIDO standard: NAK55
Wear resistance: ★★★☆☆
Toughness: ★★★☆☆
Machinability: ★★★☆☆
Polishability: ★★★★☆
Corrosion resistance: ★★★☆☆
Product Description
High-grade pre-hardened plastic mold steel, hardness up to HCR37-42℃, no need to heat treat again. Special dissolution, good cutting properties (HRC40 is the best), large mold material also has balanced hardness and processability, good cutting properties, good polishing properties, no heat treatment, good easy cutting properties, good corrosion resistance, excellent polishing properties. Mainly used in precision rubber mold, high strength mold plate, etc.
15、Japan Hitachi Metals SLD - High wear resistant and high chrome cold work tool steel JIS SKD11
Brand: JAPAN Hitachi Metals
Factory condition: HB210
Equivalent to Buderus standard: 2379
Equivalent to Bohler standard: K110
Equivalent to DAIDO standard: DC11
ASSAB standard: XW-42
Abrasion resistance: ★★★☆☆
Toughness: ★★★☆☆
Dimensional stability: ★★★★☆
Workability: ★★★☆☆
Product Description
A general-purpose tool steel for cold working with a wide range of applications.
It has high wear resistance, high compressive strength, relatively good toughness, good quenching performance, and low heat treatment deformation.
In recent years, with the application of isotropic steelmaking process (Isotropy), the performance of SLD has been further improved, the use of the effect is significantly better than other SKD11 class mold materials. Used for stamping, drop, shear, stretching, bending, embossing, cold extrusion, cold forging, powder pressing and other molds.
16、Hitachi Metals HPM50 - Highly polished pre-hardened precision mold steel
Brand: JAPAN HITACHI METAL
Factory condition: HRC38-43
Equivalent to DAIDO standard: NAK80
Wear resistance: ★★★☆☆
Toughness: ★★★★☆
Machinability: ★★★☆☆
Polishability: ★★★★☆
Corrosion resistance: ★★★☆☆
Product description
It has good polishing performance and excellent discharge performance, and the treated surface is so good that it can replace the etching process.
The surface hardness will not increase after the EDM process, which can simplify the subsequent processing. Mainly used in mirror polishing molds.
17、Japan Hitachi Metals HPM7 - High Precision Plastic Mold Steel
Factory condition: HRC29-33
Buderus Standard: 2738HH
Equivalent to Bohler standard: M238
Daido Standard: PX88
ASSAB standard: 718
Abrasion resistance: ★★★☆☆
Toughness: ★★★☆☆
Machinability: ★★★★☆
Polishability: ★★★★☆
Corrosion resistance: ★★★☆☆
Product description
P20+NI is improved and refined by new technology to improve the essential stretching, toughness, and solubility of the material, and the hardness of the large section material is more balanced, and the machinability is better than the general quick-cutting steel and CSM steel, and the weldability is excellent.
18、Hitachi Metals SLD8 - High Hardness and Toughness Cold Work Tool Steel
Brand: JAPAN HITACHI METAL
Factory condition: HB235
Equivalent to DAIDO standard: DC53
Wear resistance: ★★☆☆☆
Toughness: ★★★★☆
Dimensional Stability: ★★☆☆☆
Machinability: ★★★★☆
Product description
Improved version of SLD (Japanese Standard SKD11). The machinability has increased significantly due to the change in the amount of vanadium added.
Toughness is more than 50% better than SLD. In terms of tempering softening resistance, the hardness of HRC62-63 can be obtained by tempering at 530℃.
Using this characteristic, for aging deformation and wire-cutting rupture and deformation can be suppressed.
Mainly used in precision hardware mold forming or precision parts and other requirements toughness and wear resistance of both high mold.
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