High Speed Steel M2 Bars

Aiman Metals, located in Kuala Lumpur, Malaysia, has earned a solid reputation as a reliable manufacturer and supplier of top-notch High Speed Steel (HSS) M2 bars. They pride themselves on delivering exceptional quality and performance tailored to the needs of precision tooling industries. Renowned for their dependability and consistent product standards, Aiman Metals provides M2 bars that cater to a variety of high-performance applications, such as cutting tools and industrial components. With cutting-edge processing capabilities and rigorous quality control, they ensure that every batch of HSS M2 bars meets international standards, serving sectors like automotive, aerospace, mold-making, and general engineering throughout Malaysia and the Asia-Pacific region.

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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 is a tungsten-molybdenum high-speed tool steel known for its impressive composition, which typically includes carbon (~0.85%), tungsten (~6.0%), molybdenum (~5.0%), chromium (~4.0%), vanadium (~2.0%), and iron as the balance. This unique blend provides an outstanding mix of toughness, wear resistance, and red hardness. M2 steel retains its hardness even at elevated temperatures, making it perfect for high-speed cutting tasks. With the right heat treatment, M2 can reach a hardness of 62–65 HRC. It boasts high compressive strength, good grindability, and minimal distortion during heat treatment, ensuring long-lasting tool life and stable performance.

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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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High Speed Steel M2 Bars Uses

High Speed Steel M2 bars find extensive use in crafting cutting tools that demand excellent edge retention and heat resistance. They are commonly used in applications like drill bits, end mills, reamers, taps, saw blades, broaches, and lathe tools. The automotive, aerospace, and heavy machinery industries rely on M2 for tools designed to cut hardened materials or operate at high speeds. M2’s ability to maintain hardness and resist wear at elevated temperatures also makes it ideal for punches, dies, and precision forming tools. Its versatility, cost-effectiveness, and well-rounded properties make it a popular choice in the industry.

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