High Speed Steel M42 Bars

Aung Metals, a prominent manufacturer and supplier located in Naypyidaw, Myanmar, is all about crafting top-notch High Speed Steel (HSS) M42 Bars. These bars are celebrated for their remarkable hardness, wear resistance, and toughness. By employing cutting-edge manufacturing techniques and rigorous quality checks, Aung Metals guarantees that each M42 Bar not only meets international standards but also delivers dependable performance in tough industrial and machining settings. Known for their ability to maintain hardness even at high temperatures, HSS M42 Bars are perfect for industries focused on cutting, drilling, and tool-making. Aung Metals offers precision-engineered steel solutions that blend durability, high performance, and long-lasting efficiency for critical applications.

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M42 Alloy High Speed Steel Bars

High Speed Steel M42 Round Rods

M42 Alloy High Speed Steel Bright Bars

What is High Speed Steel M42 Bars ?

High Speed Steel M42 Bars are primarily made of iron, featuring about 1.05% carbon, 8–10% cobalt, 4% chromium, 1.5% molybdenum, 1.5% vanadium, and 1% tungsten. This unique blend gives them outstanding hardness, wear resistance, and red hardness, making them ideal for high-speed cutting tasks. On the mechanical side, M42 steel boasts a tensile strength of 1200–1500 MPa, hardness ranging from 64 to 67 HRC, and impressive toughness. The material holds its strength at higher temperatures, shows excellent fatigue resistance, and offers great machinability and grindability, making it a go-to for high-performance tooling applications.

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High Speed Steel M42 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 M42 Bars

ASTM A600	C		Mn		P	S	Si		Cr		V		Mo		W		Co
M42	1.05	1.15	0.15	0.40	0.03	0.03	0.15	0.65	3.50	4.25	0.95	1.35	9.00	10.00	1.15	1.85	7.75	8.75
DIN ISO 4957	C		Mn		P	S	Si		Cr		V		Mo		W		Co
1.3247/HS2-9-1-8	1.05	1.15	…	…	…	…	…	0.70	3.50	4.50	0.90	1.30	9.00	10.00	1.20	1.90	7.50	8.50
JIS G4403	C		Mn		P	S	Si		Cr		V		Mo		W		Co
SKH59	1.05	1.15	…	0.40	0.03	0.03	…	0.70	3.50	4.50	0.90	1.30	9.00	10.00	1.20	1.90	7.50	8.50

Mechanical Properties of High Speed Steel M42 Bars

Mechanical Properties	Metric	Imperial
Hardness, Rockwell C (oil quenched from 1204°C, 5 minutes)	64.3	64.3
Hardness, Rockwell C (oil quenched from 1177°C, 5 minutes)	65.5	65.5
Hardness, Rockwell C(oil quenched from 1163°C)	65.8	65.8
Izod impact unnotched (oil quenched at 1191°C; 510°C temper temperature)	13.6 J	10.0 ft- lb
Izod impact unnotched (oil quenched at 1191°C; 622°C temper temperature)	24.4 J	24.4 J
Machinability (1% carbon steel)	35.0 – 40.0%	35.0 – 40.0%
Poisson’s ratio	0.27-0.30	0.27-0.30
Elastic modulus	190-210 GPa	27557-30457 ksi

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Equivalent Grades of High Speed Steel M42 Bars

Country	USA	German	Japan
Standard	ASTM A600	DIN EN ISO 4957	JIS G4403
Grades	M42	1.3247/HS2-9-1-8	SKH59

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High Speed Steel M42 Bars Types

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Frequently Asked Questions (FAQ)

Can High-speed Steel M42 Be Welded?

Yes, High-Speed Steel M42 can be welded, but it requires specialized techniques like preheating, post-weld heat treatment, and using appropriate filler materials to avoid cracking and maintain its properties.

Are High Speed Steel M42 Bars Recyclable?

Yes, High Speed Steel M42 bars are recyclable. They can be melted and reused in manufacturing, reducing waste and conserving resources, making them an environmentally friendly material choice.

How Should High-speed Steel M42 Bars Be Stored?

High-Speed Steel M42 bars should be stored in a dry, cool environment, protected from moisture and corrosion. Ensure they are placed on clean, stable surfaces to prevent damage and maintain quality.

High Speed Steel M42 Bars Uses

High Speed Steel M42 Bars are extensively utilized in the cutting tool, machining, and manufacturing sectors due to their exceptional hardness, wear resistance, and heat resistance. You’ll find them in a variety of applications, including drills, taps, end mills, saw blades, gear cutters, reamers, and other precision cutting tools. They shine in high-speed machining operations that demand sustained hardness and dimensional stability at elevated temperatures. M42 Bars deliver long-lasting performance, high precision, and efficiency in producing top-quality components, making them the perfect choice for industrial, automotive, aerospace, and tooling applications where durability and reliability are essential.

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