Steel Grade	C	Si	Mn	P	S	Cr	W
1.2436	2.00 2.30	0.10 0.40	0.30 0.60	≤ 0.030	≤ 0.030	11.00 13.00	0.60 0.80
D6	2.00 2.20	0.70 0.90	0.20 0.40	≤ 0.030	≤ 0.030	11.50 12.50	0.60 0.90

Dimensions

Shape	Thick / Dia. (mm)	Width (mm)
Round	8-400	/
Flat	6-200	20-910
Block	150-300	200-1000

Delivery Condition

EAF+(ESR) or EAF+LF+VD+(ESR), Hot rolled or Forged, Annealed, Hardness≤255HB, Black surface or Machined surface, UT 100% Passed

Characteristics

1. A kind of cold work tool steel with excellent wear resistance and edge holding ability

2. High surface hardness after heat treatment.

3. Medium toughness, but high compressive strength, and good through hardening properties and dimensional stability.

Applications

Tool Steel Round Bar DIN 1.2436 is for making Cutting and drawing tools of high wear resistance, rolls with high dimensional stability, deep drawing tools, tools of wire, bar and tube production, cold shear blades for thin sheets.

Heat Treatment

Annealing

800 to 850°C

Slow con trolled cooling in furnace at a rate of 10 to 20°C/hr down to approx. 600°C, further cooling in air.

Hardness after annealing: max. 250 HB

Stress relieving

650 to 700°C

Slow cooling in furnace; intended to relieve stresses set up by extensive machining, or incomplex shapes.

After through heating, hold in neutral atmosphere for 1 to 2 hours.

Hardening

950 to 980°C

Oil, salt bath (220 to 250°C or 500 to 550°C), air plast, still air. Holding time after temperature equalization: 15 to 30 minutes. Obtainable hardness: 64 - 66 HRC.

Special treatment: Hardening 1020°C and tempering at 500°C.

Obtainable hardness approx. 61 HRC (e.g. if followed by nitriding).

Tempering

Slow heating to tempering temperature immediately after hardening/time in furnace 1 hour for each 20 mm of workpiece thickness but at least 2 hours/cooling in air. For certain cases we recommend to reduce tempering temperature and increase holding time.

What we can offer?

We offer a wide range of steel products in a wide variety of dimensions and executions, acc.to the common international specifications or customerized.

Machining and heat treatment are available.

Also, we advise you in choosing the right materials.

Shape Available

Solid round bar

Flat bar

Square bar

Hexagon bar

Block

Plate

Sheet

Wire rod

Strip

	AISI	DIN	JIS	Stock	Application
Hot Work Tool Steel	H11	1.2343	SKD6	√	Die Casting Dies,Extrusion Dies, Hammer Dies, Ram Dies, Forging Dies etc.
	H13	1.2344	SKD61	√
	H10	1.2365	SKD7
	——	1.2367	——
	L6	1.2714 / 1.2713	SKT4	√
	H12	1.2606	SKD62
	H21	1.2581	SKD5	√
Cold Work Tool Steel	D3	1.2080	SKD1	√	Cutting Tools, Punching Tools, Shear Bladers, Reamers, Thread Rolling Dies, Calipers, Sockets etc.
	——	1.2601	~SKD11	√
	D2	1.2379	~SKD11	√
	——	1.2379 MOD	DC53 (Daido)	√
	D6	1.2436	——
	O1	1.2510	SKS3	√
	O2	1.2842	——
	A2	1.2363	SKD12
	S1	1.2550	——
	S7	1.2357	——
	——	1.2767	SKT6
	L2	1.2210	——
Plastic Mould Steel	P20	1.2311	——	√	Mold Base, Core & Cavity, Bumper Mold etc.
	P20+Ni	1.2738	——	√
	P20+S	1.2312	——	√
	——	1.2316	——
	420	1.2083	SUS420J2	√
	——	——	NAK80 (Daido)	√
Alloy Steel	4120	25CrMo4 / 1.7218	SCM420		Shafts, Gears, Drillers, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Crankshafts, Connecting Rods, Came, Couplings etc.
	4135	34CrMo4 / 1.7220	SCM435
	4130	34CrMo4 / 1.7220	SCM430	√
	4140	42CrMo4 / 42CrMoS4 / 1.7225	SCM440	√
	4142	41CrMo4 / 1.7223	SCM440
	4145H	——	——
	4330V	——	——
	4340	34CrNiMo6 / 1.6582	SNCM439
	5115	16MnCr5 / 16MnCrS5 / 1.7131
	5120	20MnCr5 / 20MnCrS5 / 1.7147	SMnC420H
	5140	41Cr4 / 41CrS4 / 1.7035	SCr440	√
	8620	21NiCrMo2 / 1.6523	SNCM220
	8640	40NiCrMo2-2 / 1.6546	SNCM240
	——	18CrNiMo7-6 / 17CrNiMo6 / 1.6587	——
	9840	36CrNiMo4 / 1.6511	——
	E71400	41CrAlMo7-10 / 1.8509	SACM1
	——	34CrAlNi7 / 1.8550	——
Bearing Steel	E52100	100Cr6 / 1.3505	SUJ2	√	Bearing, Shafts etc.
	——	100CrMn6 / 1.3520	——
	——	100CrMo7-3 / 1.3536	——
Spring Steel	5155	55Cr3 / 1.7176	SUP9		Springs
	6150	51CrV4 / 1.8159	SUP10
	9261	60CrSi7 / 1.7108	——
Carbon Steel	1010	CK10 / C10E / 1.1121	S10C		Shafts, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Came, Couplings etc.
	1020	C22 / 1.0402	S20C	√
	1040	CK40 / C40E / 1.1186	S40C	√
	1045	CK45 / C45E / 1.1191	S45C	√
	1050	CK50 / C50E / 1.1206	S50C	√
	1055	CK55 / C55E / 1.1203	S55C
	1064	CK60 / C60E / 1.1221	S58C
High Speed Tool Steel	M2	1.3343	SKH51	√	Reamer, End-mill, Hob, Cutter, Bite, Drill, Punch, Tap, Brooch etc.
	M7	1.3348	——
	M42	1.3247	SKH59	√
	M35	1.3243	SKH55	√
	T1	1.3355	SKH2
	T15	1.3202	——
	T42	1.3207	SKH57