1.3343, HS6-5-2C, HIGH SPEED STEEL

S6-5-2, HS6-5-2, 1.3343 – specification and application

High-speed steel with very good efficiency, ductility, resistance to abrasion and torsion, and impact strength used to work with products with a strength of more than 830 MPa. It is used in the production of drills, blades, knives, spiral drills, thread cutting tools, broaching tools, gear tools, milling cutters, mandrel reamers, end milling cutters, and circular saw segments. SW7M / 1.3343 is prone to decarburization and overheating during heat treatment. After hardening and tempering, it achieves hardness above 63 HRC.

HIGH-SPEED TUNGSTEN-MOLYBDENUM STEEL HS6-5-2C, S6-5-2, 1.3343, AISI M2 ACCORDING TO ISO 4957, DIN 17350.

Standard	Steel Grade
	Chemical Composition %
	C:	Mn:	Si:	P:	S:	Cr:	Mo:	Ni:	V:	W:	Co:
PN	SW7M
PN	0.82 – 0.92	<0.4	<0.5	<0.03	<0.03	3.5 – 4.5	4.5 – 5.5	<0.4	1.7 – 2.1	6.0 – 7.0	<0.5
ISO	HS6-5-2C
ISO	0.86 – 0.94	<0.4	<0.45	<0.03	<0.03	3.8 – 4.5	4.7 – 5.2	–	1.7 – 2.1	5.9 – 6.7	–
ISO	HS6-5-2 – 1.3339
ISO	0.80 – 0.88	<0.4	<0.45	<0.03	<0.03	3.8 – 4.5	4.7 – 5.2	–	1.7 – 2.1	5.9 – 6.7	–
DIN	S6-5-2 – 1.3343
DIN	0.86 – 0.94	<0.4	<0.45	<0.03	<0.03	3.8 – 4.5	4.7 – 5.2	–	1.7 – 2.0	6.0 – 6.7	–
NF	Z85WDCV06-05-04-02
NF	0.80 – 0.87	<0.4	<0.5	<0.03	<0.03	3.5 – 4.5	4.6 – 5.3	–	1.7 – 2.2	5.7 – 6.7	–
ASTM	UNS T11302 – AISI M2
ASTM	0.78 – 0.88	0.15 – 0.40	0.20 – 0.45	<0.03	<0.03	3.75 – 4.50	4.5 – 5.5	–	1.75 – 2.20	5.50 – 6.75	–
GOST	R6M5 – Р6М5
GOST	0.82 – 0.90	<0.5	<0.5	<0.03	<0.25	3.80 – 4.40	4.8 – 5.3	<0.4	1.7 – 2.1	5.5 – 6.5	<0.5

Mechanical properties of SW7M, S6-5-2, HS6-5-2C, 1.3343

Hardness in +A delivery condition: <269 HB
Hardness in +A+C delivery condition: <319 HB
Hardness in +A+CR delivery condition: <339 HB
Hardness after hardening and tempering:
- at 300 ℃ = 61,5 HRC
at 350 ℃ = 62 HRC
at 400 ℃ = 62 HRC
at 450 ℃ = 63 HRC
at 500 ℃ = 65 HRC
at 550 ℃ = 65 HRC
at 600 ℃ = 60 HRC
at 650 ℃ = 52 HRC

Heat and plastic treatment processes of SW7M, S6-5-2, HS6-5-2C, 1.3343 steel:

Softening annealing at a temperature of 800 – 900 ℃
Relief annealing at a temperature of 600 – 700℃
Heating no. I in a temp. of about 550℃
Heating no. II in a temp. of about 850℃
Austenitizing at 1190 – 1230 ℃ (hardening in salt bath and oil)
Tempering usually in the range of 550 – 570 ℃
Forging and rolling at temperatures 1100 – 900 ℃
Nitriding in the temperature range of 510 – 530 ℃

In the above mentioned grades the company provides:

Drawn bars, hot-rolled bars, high-speed forged bars 1.3343, HS6-5-2, S6-5-2, HS6-5-2C
High-speed steel sheets 1.3343, HS6-5-2, S6-5-2, HS6-5-2C

Other replacements and equivalents of the grade:

SW7M, 1.3343, HS6-5-2C, HS6-5-2, S6-5-2, 1.3339, X82WMOCRV6-5-4, X80WMOCRV6-5-4, X 82 WMOCRV 6-5-4, X 80 WMOCRV 6-5-4, R6M5, AISI M2, SKH51, SS 2722, R6, W6MO5CR4V2, CSN 19830, 1.3553, SC6-5-2, SC 6-5-2, 1.3341, BS BM2, X82WMO0605KU, X 80 WMO 06 05 KU, RP5, EM2, F-550.A, UNS T11302, AISI M-2, HS 6-5-2 C, S 6-5-2, Р6М5, R6M5.