High Speed Steel M2 Bars

Hyderabad-based Dhruv Metals is a renowned producer and supplier of high-grade metal products for precision engineering purposes. It is famous for its quality and reliability and deals exclusively in high-performance materials such as High-Speed Steel (HSS) M2 Bars. These bars are known for being extremely hard, abrasion-resistant, and capable of maintaining high temperatures, which makes them best suited for cutting tool industries, industrial applications, and precision manufacturing businesses. Offering high customer satisfaction and technical competency, Dhruv Metals has gained a reliable place in the metal business as a value supplier for its critical applications.

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M2 Alloy High Speed Steel Bar

High Speed Steel M2 Round Rod

HSS M2 Bars

What is High Speed Steel M2 Bars ?

HSS M2 Bars consist of 0.85–1.0% Carbon, 4.0–5.0% Molybdenum, 3.75–4.5% Tungsten, 1.0–1.4% Chromium, and 0.3–0.9% Vanadium, with the presence of traces of Cobalt and Silicon. The balanced alloy contains high hardness up to 65 HRC after heat treatment, along with the best wear resistance and toughness at high temperatures. Tungsten and molybdenum combination provides hardness retention, whereas vanadium provides abrasion resistance. These properties render M2 steel extremely resistant to wear, even under sustained thermal stress, and eminently suitable for high-demand tool operations.

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High Speed Steel M2 Bars Specifications

Standard : ASTM A600, ASME SA600
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
Form : Round
Diameter : 2mm to 100mm depending on grades
Length : 100 mm to 10,000 mm
Surface Condition : Black, Grinded, Turned Bright, Machined Proof
Application : Lathe Tools, Milling Cutter, Cutter Blades, Boring Tools, Twist drills, Milling Knives, Reamers, Taps, Metalcutting saws, Screw Cutting Tools, File Cutter’s Chissels, Drills, Hobs, Drill Bits, Tread cutting tools etc

Chemical Compositions of High Speed Steel M2 Bars

ASTM A600	C		Mn		P	S	Si		Cr		V		Mo		W
M2 regular C	0.78	0.88	0.15	0.40	0.03	0.03	0.20	0.45	3.75	4.50	1.75	2.20	4.50	5.50	5.50	6.75
DIN ISO 4957	C		Mn		P	S	Si		Cr		V		Mo		W
1.3343	0.86	0.94	…	…	…	…	…	0.45	3.80	4.50	1.70	2.10	4.70	5.20	5.90	6.70
JIS G4403	C		Mn		P	S	Si		Cr		V		Mo		W
SKH51	0.80	0.88	…	0.40	0.03	0.03	…	0.45	3.80	4.50	1.70	2.10	4.70	5.20	5.90	6.70

Mechanical Properties of High Speed Steel M2 Bars

Mechanical properties	Metric	Imperial
Hardness, Rockwell C (tempered at 1150°F, quenched at 2200°F)	62	62
Hardness, Rockwell C (as hardened, quenched at 2200°F)	65	65
Compressive yield strength (when tempered at 300°F)	3250 MPa	471000 psi
Izod impact unnotched (when tempered at 300°F)	67 J	49.4 ft-lb
Abrasion (loss in mm³, as-hardened; ASTM G65)	25.8	25.8
Abrasion (loss in mm³, tempered at 1275°F; ASTM G65)	77.7	77.7
Poisson’s ratio	0.27-0.30	0.27-0.30
Elastic modulus	190-210 GPa	27557-30458 ksi

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Equivalent Grades of High Speed Steel M2 Bars

Country	USA	German	Japan
Standard	ASTM A600	DIN EN ISO 4957	JIS G4403
Grades	M2	1.3343	SKH51

Thermal Properties of High Speed Steel M2 Bars

Thermal properties	Metric	Imperial
CTE, linear (@20.0 – 100°C/ 68.0 – 212°F)	10 μm/m°C	5.56 μin/in°F
CTE, linear (@20.0 – 500°C/68.0 – 932°F)	12.2 μm/m°C	6.78 μin/in°F
CTE, linear (@20.0 – 850°C/68.0 – 1560°F)	12.6 μm/m°C	7 μin/in°F

Physical Properties Of High Speed Steel M2 Bars

DENSITY (G/CM 3)	8.08
DENSITY (LB/IN 3)	0.292
MELTING POINT (°C)	1425
MELTING POINT (°F)	2600

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High Speed Steel M2 Bars Types

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Frequently Asked Questions (FAQ)

Can High-speed Steel M2 Be Welded?

Yes, High-Speed Steel M2 can be welded, but it requires careful heat control. Preheating, welding with proper filler material, and post-weld heat treatment are necessary to avoid cracking and preserve hardness.

Are High Speed Steel M2 Bars Suitable For High-Temperature Applications?

High-Speed Steel M2 bars are not ideal for high-temperature applications, as they can lose hardness and wear resistance above 540°C, limiting their performance in extreme heat conditions.

How Should High-speed Steel M2 Bars Be Stored?

High-Speed Steel M2 bars should be stored in a dry, cool environment to prevent corrosion. They should be kept off the ground, ideally on wooden or metal racks, and away from moisture or chemicals.

High Speed Steel M2 Bars Uses

High-Speed Steel M2 Bars find widespread application in making precision cutting instruments like reamers, milling cutters, drill bits, saw blades, and taps. Owing to their thermal shock resistance and strength, they are also used in lathe tool bits, grinding tools, and die work like stamping, punching, and forming. M2 steel is a popular material for high-speed machining and tooling use where edge durability, longevity, and heat resistance are paramount. M2 bars are used by industries such as aerospace, automobile, metal working, and general engineering for high-performance, long-lasting tools that function under severe conditions.

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