High Speed Steel M2 Bars

Aung Metals, a prominent manufacturer and supplier located in Naypyidaw, Myanmar, is well-known for producing top-notch **High Speed Steel M2 Bars** that adhere to global standards for precision and durability. These bars are crafted to offer exceptional hardness, wear resistance, and heat resistance, making them perfect for tough cutting and machining tasks. Aung Metals utilizes cutting-edge production techniques and rigorous quality control measures to guarantee consistent performance and reliability. Catering to industries like automotive, aerospace, tooling, and engineering, the company delivers M2 steel solutions that boost productivity, prolong tool life, and meet the demanding needs of today’s manufacturing landscape.

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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 ?

**High Speed Steel M2 Bars** are primarily made up of molybdenum (about 5%), tungsten (6%), chromium (4%), vanadium (2%), carbon (0.85–0.9%), along with trace amounts of manganese and silicon. This specific alloy composition results in remarkable hardness, high red hardness, excellent wear resistance, and good toughness. M2 steel retains its cutting edge even at high temperatures and showcases impressive compressive strength and dimensional stability. These mechanical characteristics make M2 bars particularly well-suited for precision machining, heavy-duty cutting tools, and applications that require reliable performance under significant stress.

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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** are extensively utilized in industries that demand high-performance cutting and forming tools. They are commonly found in the production of drills, taps, milling cutters, broaches, saw blades, and reamers. In sectors like automotive, aerospace, and metalworking, M2 bars deliver dependable performance in high-speed and high-temperature environments. Their outstanding wear resistance, heat resistance, and toughness make them ideal for precision machining, tool-making, and industrial applications where durability and longevity are essential. M2 steel bars continue to be the go-to choice for professional tool manufacturers around the globe.

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