1.3247/HS2-9-1-8 High Speed Steel

1.3247/ HS2-9-1-8 high speed tool steel manufacturers and suppliers,supplied in round rods,square bars,flat bars,plates,sheets and blocks.

1.3247/HS2-9-1-8 is a cobalt high speed steel which has excellent cutting performance, good toughness and superior wear resistance after heat treatment . It will achieve a high heat treated hardness of 68 to 70 Rockwell C.

1.3247/HS2-9-1-8 high speed steel is suitable for cutting tools including twist drills, taps, broaches tools, milling cutters, reamers, end mills, bandsaws and cold work tools.

1.3247/HS2-9-1-8 High Speed Steel Chemical Composition: 1.3247 per DIN 17350 (High Speed Steel); HS2-9-1-8 per EN ISO 4957

GRADE	NUMBER	C	Si	Mn	P	S	Cr	Mo	V	W	Co
HS2-9-1-8		1.05-1.15	≤ 0.70	≤ 0.40	≤ 0.030	≤ 0.030	3.50-4.50	9.00-10.00	0.90-1.30	1.20-1.90	7.50-8.50
	1.3247	1.05-1.12	≤ 0.45	≤ 0.40	≤ 0.030	≤ 0.030	3.60-4.40	9.00-10.00	1.00-1.30	1.20-1.80	7.50-8.50

1.3247/HS2-9-1-8 High Speed Steel Related Specification

AISI/ASTM:M42

JIS/KS:SKH59

UNS:T11342

1.3247/HS2-9-1-8 High Speed Steel Heat Treatment

1.3247/HS2-9-1-8 High Speed Steel Annealing

1.Annealing is recommended after hot working and before re hardening

2.Heat the temperature to 850°C at a rate of no more than 220°C per hour.

3.Hold at the temperature for one hour per inch of thickness(at least two hours).

4.Cool slowly in the furnace or in air to ambient temperature.

5.The resultant hardness achieved should be Max 269HB or lower.

1.3247/HS2-9-1-8 High Speed Steel Hardening

1.Hardening in a vacuum or atmosphere furnace, or in a properly rectified salt bath is recommended.

2.Pre heat thoroughly to 820-870°C, transfer to the high temperature salt bath or furnace.

3.Heat to the final hardening temperature of 1160-1180°C in salt, or 1180-1190°C in atmosphere or vacuum furnaces，quench without further soaking into salt at 540-595°C or warm oil,then complete the quench in air.

1.3247/HS2-9-1-8 High Speed Steel Tempering

1.Tempering must be done immediately after quenching.

2.Heat thoroughly and uniformly to the tempering temperature of 510-620°C.

3.Hold at the temperature for at least two hours (one hour per inch of the total thickness).

4.Triple tempering is strongly recommended for1.3247/HS2-9-1-8 high speed steel.

1.3247/HS2-9-1-8 High Speed Steel Delivery Condition

1.3247/HS2-9-1-8 High Speed Steel Round Bar
Diameter	1-16mm	10-50mm	50-180mm	180-300mm
Process	Cold Drawn	Hot Rolled	Hot Forged	Free Forging
1.3247/HS2-9-1-8 High Speed Steel Flat bar
Thickness	1-2.5mm	1.5-20mm	20-300mm
Width	Max 800mm	Max 800mm	Max 800mm
Process	Cold Drawn	Hot Rolled	Hot Forged

1.3247/HS2-9-1-8 High Speed Steel Quality Assured Supply

1.3247/HS2-9-1-8 high speed steel is supplied in accordance with our ISO 9001 : 2008 registration.