Hot Work Tool Steel 1.2343

$2400 - $2750

Norms: ASTM A681;
Size range: round bar dia13mm - dia 600mm;
flat 10 - 400mm x 100 - 800mm;
Surface condition: round bar, gound / rough
turned / polished;
flat, black / rough machined;
Packing: seaworthy packing.

Hot work tool steel 1.2343

Standard	Grade
AISI/SAE	H11
W.Nr/DIN	1.2343
JIS	SKD6
GB	4Cr5MoSiV

Tool Steel 1.2343 Chemical Composition (%)

C	Si	Mn	Cr	Mo	V	P	S
0.33-0.45	0.80-1.20	0.20-0.50	4.80-5.50	1.10-1.60	0.30-0.60	≤0.03	≤0.03

Hot Forming

Forging: 1100 to 900℃, slowing cooling in furnace.

Heat Treatment

Annealing: 750 to 800℃, slow cooling in furnace (10-20℃/hr), down to 600℃, cooling in air. Hardness after annealing: max. 230 HB.

Stress relieving: 600 to 650℃, slow cooling in furnace. Hold in neutral atmosphere for 1 to 2hours.

Hardening: 1000 to 1040℃, oil/air, hold 15 to 30 minutes. Hardness , 52 to 56 HRC in oil, 50 to 54 HRC in air.

Tempering: 560 to 580℃. Slowly heating to tempering temperature right after hardening. Recommended to temper at least twice. The second tempering temperature shall be approx. 30℃ lower than the first tempering.

Tempering ℃	300	400	500	580
HRC	53	53	54	50

* Hardening temperature: 1020℃, specimen size: dia50mm

Surface treatment

Nitriding: Suited for both bath and gas nitriding.

Properties

High impact strength, excellent hot tensile properties and deep hardening properties, insensitivity to thermal shocks. Water cooling available.

Tool Steel 1.2343 Applications

Heavy duty hot work tools and dies: mandrels, dies, and containers for metal tube and rod extrusion; hot extrusion equipment; tools and dies for the manufacture of hollow bodies, screws, rivets, nuts, and bolts. Die casting equipment, forming dies, die inserts, hot shear blades, and plastic moulding dies.

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