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Size Range
RCS : 55 - 250 mm
Rounds dia 90 - dia 190 mm in Steps of 10

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Die weigth	Hammer dies	Press dies	Die holders
Small (max. 500 kg)	2714 ISO-B	2344 ISO-B / 2365 ISO-B / 2367 ISO-B	2714 ISO-B
Medium (max. 3000 kg)	2714 ISO-B 2714 ISO-B MOD	2344 ISO-B / 2367 ISO-B	2714 ISO-B contour hardened
Large and / or crack susceptible	2714 ISO-B 2714 ISO-B MOD (+ contour hardened)	2714 ISO-B / 2344 ISO-B	2714 ISO-B contour hardened
Challenge for further material developments

Buderus Edelstahl recommends the following Mould Steels for different applications:

Steel group and Material Number

DIN designation

AISI

AFNOR

Material characteristic

Delivered condition

For which tools

Unalloyed tool steel

1730

C45W

SAE 1045

Y 45

Surface hardenable to 55 HRC

Normalised, max.
190 HB

Attachments, holding blocks and tool holding fixtures with low stress, prototyping.

Heat-treatable mould steels

2311 ISO-BM

40CrMnMo7

~P 20

40 CMD 8

Mould steel, economical to machine, good polishability, grain-reliable for dimensions less than 400 mm thick, hard chrome platable, flame hardenable & nitridable.

Tempered to 280-325 HB

950-1100 N/mm² *

Dies for compression and injection moulding tools less than 400mm thick

2738 EFFICIENT

~40CrMnNiMo8-6-4

~P 20 + 0.5%Ni

~40 CMND 8

Properties as for 2311 ISO-BM, but reliable penetration hardening-characteristics for large dimensions 600 mm thick

Tempered to 280-325 HB 950-1100 N/mm² *

Dies for compression and injection tools, holding blocks production for dimensions ?400 mm thick < 600 mm thick

2738 ISO-BM

40CrMnNiMo8-6-4

~P 20 + Ni

40 CMND 8

Properties as for 2311 ISO-BM, but reliable penetration hardening-characteristics for large dimensions.

Tempered to 280-325 HB

950-1100 N/mm² *

Dies for compression and injection tools, holding blocks production for dimensions ≥400 mm thick.

THRUHARD SUPREME HH

26MnCrNiMo6-5-4

Pre-hardened mould steel for the largest dimensions, grain reliable, very good polishability, good weldablity, good machinability, high thermal conductivity.

Normal hardness: THRUHARD SUPREME Tempered to 280-325 HB.

950-1100 N/mm² *
High hard: THRUHARD SUPREME HH Tempered to 310-355 HB

1050-1200 N/mm² *

Large tools for compression and injection moulds, bumpers, dashboards, garbage containers, & TV cabinets.

Compression and injection moulding tools subject to higher mechanical and thermal stress and special surface requirements such as polishability (after special test) and hard chrome plateability

2312

40CrMnMoS8-6

~P 20 + S

40 CMD 8 S

Mould steel with very good machinability, not suitable for polishing, etch graining or hard chrome plating purposes.

Tempered to 280-325 HB

950-1100 N/mm² *

Cores for compression and injection moulding tools with no surface requirements and low mechanical stress mould assemblies, holding blocks subject to low stress, prototyping

2711 ISO-B

54NiCrMoV6

~ 6 F 2

55 NCDV 7

Tough heat- resistant mould steel grain reliable, very good polishability, hard chrome platable, high percentage purity due to ISO-B process.

Annealed to max.250 HB
Tempered to 280-325 HB

950-1100 N/mm² * or
to 355-415 HB

1200-1400 N/mm² *

Compression and injection tools with higher mechanical and thermal stress and special surface requirements such as very good polishability and hard chrome plateability; contour hardening is recommended.

Case Hardening steel

2764 ISO-B

X19NiCrMo4

P 21

~ 19 NCD 4

Low- distortion mould steel with surface hardness from 60-62 HRC and core hardness 325-415 HB after case hardening (in air), very good polishablity.

Anealed max.250 HB

Compression and injection moulding tools with high compression stress combined with abrasive surface stress.

Penetration hardening tool steels

2343 ISO-B mod.

~ X38CrMoV5-1

~ H 11mod.

X36 CrMov 5

Wear-resistant hot working steels, hardenability up to 50 HRC, good nitriding performance, can also be used for large moulds, high percentage purity.

Annealed, max.230 HB

Highly stressed plastic moulds, mnould inserts for high hardnesses and abrasive stress.

2379 ISO-B

X153CrMoV12-1

~ D 2

Z 160 CDV 12

Inserts nitridable after special heat treatment.

Annealed, max.255 HB

For highly abrasive stress and high hardnesses from 58 to 63 HRC.

2767 ISO-B

X45NiCrMo4

6 F 7

45 NCD 17
(40 NCD 16)

Air hardening steel with high dimensional stability, very good toughness, hardenability 50-54 HRC, very good polishability.

Annealed, max.260 HB

For high-speed inserts up to 54 HRC.

2842

90MnCrV8

O 2

90 MV 8

Simple heat treatment, low distortion, surface layer hardness 58-62 HRC, no special requirements in terms of polishability.

Annealed, max.230 HB

Corrosion resistant steels

2083 ISO-B

X42Cr13

420

Z 40 C 14

Corrosion-resistant mould steel with good polishability, good workability, hardenability 50-54 HRC.

Annealed, max.230 HB
Tempered on request

Mould inserts

2085

X33CrS16

~422 + S

~Z 33 CS 16

Corrosion-resistant mould steel with very good machining properties.

Tempered to 265-310 HB

950-1050 N/mm² *

Mould fittings and mould frames.

2316 ISO-B mod.

~X36CrMo17

~422

Z 35 CD 17

Mould steel with very good corrosion resistance, polishable, also hardenable to 50 HRC.

Tempered to 265-310 HB

950-1050 N/mm² *

Mould inserts, slit dies, profile, sizing tools, blowing moulds, extrusion dies.

Maraging steel

2709

X3NiCoMoTi18-9-5

Maraging 300

Z 2 NKD
18-09

This steel permits simple, non-warping heat treatment with precipitation hardening at 480^oC after finish machining, hardenability up to 55 HRC.

Solution annealed, 300 HB approx

1000 N/mm² *

Injection moulding tools subject to high compression stress, part inserts, cores & ejectors.

Nitriding steels

2344 ISO-B

X40CrMoV5-1

H 13

Z 40 CDV 5

Nitridable hot working steel for extreme stress exposure to wear and torsion at high temperatures.

Tempered to 280-325 HB

950-1100 N/mm² *

7735

14CrMoV6-9

20 CDV 5.07

CrMoV nitriding steel with high toughness and thermal strength & weldable.

Tempered to 265-310 HB

950-1050 N/mm² *

8519

31CrMoV9

32 CDV 12

CrMoV nitriding steel for higher wear exposure.

Tempered to 265-310 HB

950-1050 N/mm² *

8550

34CrAINi7

34 CAND 7

Aluminium alloyed standard nitriding steel surface hardness after nitriding 1,000 HV approx.

Tempered to 237-297 HB

800-1000 N/mm² *

Extruder tools such as screws and cylinders & plastifying tools.

Note:
There may be a deviation of hardness values where portable hardness testing equipment is used. Please refer to the equipment manufacturer to determine the possible deviation.

Buderus Edelstahl recommends following Hot Working Steels

Steel group	Material Number	Code designation to DIN	DIN analysis Figures in %				Material characteristic	Important material data
Steel group	Material Number	Code designation to DIN	DIN analysis Figures in %					AC₁	AC₃	Ms	Hardening temperature	Annealing temperature	Thermal conductivity
			C	Si	Mn	P		S***	Cr	Ni	Mo	V	W	^oC	^oC	^oC	^oC	^oC	W/(mK at 500 ^oC)
High alloy CrMov hot working steels containing special carbide
2.	2344 ISO-B	X40CrMov8-1-1	0,35- 0,42	0,80- 0,120	0,25- 0,50	≤ 0,030	≤ 0.003	4,80- 5,50		1,20- 1,50	0.85- 1.15		Hot working steel with high heat resistance, hardness retention and wear resistance	855	925	300	1040	820	27,0
	2360 ISO-B*	X48CrMoV8-1-1	0,45- 0,50	0,70- 0,90	0,35- 0,45	≤ 0,020	≤ 0.003	7,30- 7,80		1,30- 1,50	1,30- 1,50		As 2344 ISO-B, but even better hardness retention and wear resistance, highly temperature resistant, good nitriding qualities	842	951	360	1080	820	25,0
	2365 ISO-B	32CrMoV12-28	0,28- 0,35	0,10- 0,40	0,15- 0,45	≤ 0,030	≤ 0.003	2,70- 3,20		2,50- 3,00	0,40- 0,70		Hot working steel with good toughness, suitable for high temperature stress and alternating stress, tolerates water cooling	790	875	350	1040	780	34,0
	2367 ISO-B	X38CrMoV5-3	0,35- 0,40	0,30- 0,50	0,30- 0,50	≤ 0,030	≤ 0.003	4,80- 5,20		2,70- 3,20	0,40- 0,60		As 2344 ISO-B, but greater heat resistance and hardness retention, high thermal endurance, good wear resistance	785	985	240	1060	780	34,8
	2606 ISO-B*	X37CrMoW5-1	0,32- 0,40	0,90- 1,20	0,30- 0,60	≤ 0,035	≤ 0.003	5,00- 5,60		1,30- 1,60	0,15- 0,40	1,20- 1,40	Hot working steel with very good heat resistance, high hardness retention and good toughness, can be water cooled to a limited extent	810	885	300	1020	800	28,0

Buderus Edelstahl recommends the following Engineering Steel for different applications:

Mat.-No.	EN/DIN - designation	Vorschrift Regulation	AFNOR	AISI	material charakteristics	Delivered condition	Application	Analyse (mass%)
Mat.-No.	EN/DIN - designation	Vorschrift Regulation	AFNOR	AISI	material charakteristics	Delivered condition	Application	C	Si	Mn	P	S	Cr	Ni	Mo	V
7131	16MnCr5	EN 10084	16 MC 5	--	case hardenable, suitable for upsetting	annealed	gears	0,14-0,19	max.0,4	1,0-1,3	max.0,035	max.0,035	0,8-1,1	--	--	--
6580	30CrNiMo8	EN 10083 SEW 550	30 CND 8		suitable for quenching and tempering	hardened and tempered to 1,100-1,250 MPa	mechanical engineering	0,26-0,33	max.0,4	0,3-0,6	max.0,035	max.0,035	1,8-2,2	1,8-2,2	0,30-0,50	--
6582	34CrNiMo6	EN 10083 SEW 550	34 CND 6	--	suitable for quenching and tempering	annealed	mechanical engineering	0,3-0,38	max.04	0,5-0,7	max.0,035	max.0,035	1,4-1,7	1,4-1,7	0,15-0,3	--
6959	35NiCrMoV12-5	--	--	--	suitable for quenching and tempering	hardened and tempered to 1,100-1,250 MPa	mechanical engineering	0,3-0,4	0,15-0,35	0,4-0,7	max.0,015	max.0,015	1,0-1,4	2,5-3,5	0,35-0,6	0,08-0,2
6981	21CrMoNiV4-7	--	--	--	elevated temperature resistant	hardened and tempered	mechanical engineering	0,17-0,25	0,15-0,35	0,35-0,85	max.0,03	max.0,035	0,9-1,2	0,2-0,8	0,65-0,8	0,25-0,35
7225	42CrMo4	EN 10083 SEW 550	40 CD 4	4140	suitable for quenching and tempering	hardened and tempered	turbine shafts/screws	0,38-0,45	max.0,4	0,6-0,8	max.0,035	max.0,035	0,9-1,2	--	0,15-0,30	--
7709	21CrMoV5-7	En 10269	--	--	elevated temperature resistant	hardened and tempered	turbine shafts/screws	0,17-0,25	max.0,4	0,4-0,8	max.0,025	max.0,03	1,2-1,5	--	0,55-0,8	0,25-0,35
7735	14CrMoV6-9	--	20 CDV 5 7	--	nitriding steel with high toughness and thermal strength, weldable, high purity, surface hardness after nitriding 750-900 HV-5 approx	hardened and tempered to 900-1,050 MPa	extrusion tools	0,11-0,17	max.0,25	0,8-1,0	max.0,002	max.0,015	1,25-1,5	--	0,8-1,0	0,20-0,30
8519	31CrMoV9	EN 10085	30 CDV 9	--	nitriding steel, surface hardness after nitriding 750-850 HV-S	annealed	mechanical engineering	0,26-0,34	max.0,4	04-0,7	max.0,025	max.0,03	2,3-2,7	--	0,15-0,25	0,1-0,2
8550	34CrAINi7	EN 10085	34 CAND 7	--	aluminium alloy standard nitriding steel, surface hardness after nitriding 900-1,150 HV-% approx	hardened and tempered	extrusion tools	0,3-0,37	max.0,4	0,4-0,7	max.0,025	max.0,03	1,5-1,8	0,85-1,15	0,15-0,25	--

PCK Steels

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we recommend the following die steels for forging application

* Please attend in any case the general restrictions and recommendations given in Buderus die steel brochure