Steel group
Material NO.

Delivered
condition

Material 
Characteristics

For which tools

For which plastics

Unalloyed tool steel

SP-1 
(SAE 1055)

Normalised 190~225HB

no extra alloy elements, good mach inability hard surface, tough core.

Built-on parts mould and tool frames with low stress

General raw plastic

SPM-1
1203(1730MOD)
(SAE1055)

Normalised

Hear treatable mould steels

7225MOD

Heat treated to 860~1000N/mm 2 (HRC 25~30)

Economical Mould easy to polish, grain-reliable, plate able, AISI 4140 modify

Bottom moulds for pressing and injection dies

Thermoplastics, also for  ABS preforms, thermosetting plastics

2311 ISO-BM
(AISI P20)

Heat treated to 950~1050N/mm 2 (HRC29~33)

Mould steel, economical to machine, easy to polish, grain-reliable for dimensions less than 400mm thick, hard chrome plate able.

Bottom moulds for pressing and injection dies, up to 400mm hardening cross-section

2738 ISO-BM
(AISI P20+Ni)

Properties as 2311 ISO-BM, but with reliable through hardening properties even with very large dimensions

Bottom moulds for pressing and injection dies, production for dimensions>=400mm hardening Cross-section

MR11
2711 (ISO-B

Heat treated to 1200~1400N/mm 2 (HRC38~44)

Heat resistant, tough mould steel, grain reliable, high-polish able, hard plate able, high degree of purity due to ISO B process

Pressing and injection dies with high mechanical and thermal tresses and special surface requirements such as high polish  

Thermoplastics and ABS, SMC, GMT, Flax PP, transparent melts. Also for thermosetting plastics when using pressing dies.

2347 (FDAC)

Heat treated to 1190~1320N/mm 2 (HRC38~42)

H-13 preharden to HRC 38~42 added special alloy, easy to maching, similar to HITACH FDAC.

Mould for die casting, mould for high pressure plastic injection

General plastic for high pressure

Through-hardening

2343 ISO-B

Annealed HB 225 MAX

Wear-resistance hot working steels, built-in hardness to 50 HRC, good nitridability also suitable for large moulds.

Highly stressed plastic moulds, mould inserts for high hardness and abrasive stress

Thermoplastics, thermosetting plastics and composite materials.

2344 ISO-B

2767 ISO-B

2379 ISO-B

Annealed HB 250 MAX

Highly wear resistance

Corrosion-resistant steels

2083 ISO-B

Heat treated to 1190`1320N/mm 2 (HRC38~42)

Corrosion-resistant mould steel with good polish ability, good mach inability, built-in hardness 50~54 HRC

Mould inserts 

Chemically aggressive and acid releasing plastics; 2083 ISO-B for thermosetting plastics and thermoplastic

2316 ISO-B MOD

Heat treated to 900~1050N/mm 2 (HRC27~33)

Mould steel with very good corrosion resistance, polish able, built in strength 900~1050N/mm 2

Moulds inserts, sheet dies, coinings, blowing moulds

2316 ISO-B MOD for thermoplastics, PVC amino plastics and halogenated fire-proofing additives