High Speed Steel M42 Bars

Mourad Metals is a well-respected manufacturer and supplier located in Tunis, Tunisia, specializing in top-notch High-Speed Steel (HSS) M42 Bars designed for tough industrial and metalworking tasks. The company adheres to rigorous quality standards and employs advanced manufacturing techniques to guarantee consistent hardness, wear resistance, and precise dimensions. Catering to sectors like aerospace, automotive, tooling, and engineering, Mourad Metals provides HSS M42 Bars customized to meet specific customer needs. With a commitment to reliability, prompt delivery, and excellent technical support, the company has built a solid reputation as a trusted source for High-Speed Steel M42 Bars in both local and global markets.

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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 is a cobalt-rich alloy that includes around 1.1% carbon, 4% chromium, 2% molybdenum, 1% vanadium, 6% tungsten, and 8% cobalt. This unique blend offers remarkable hardness, wear resistance, and red hardness, allowing it to maintain cutting performance even at elevated temperatures. HSS M42 Bars are known for their outstanding toughness, high fatigue strength, and good machinability, making them perfect for precision tools that demand a long service life and high-speed performance under thermal stress.

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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

HSS M42 bars are used for the manufacturing of cutting tools like drills, end mills, and saw blades because of their

These HSS M42 Bars are commonly used in the production of cutting tools, drills, taps, milling cutters, reamers, gear cutters, and lathe tools. They play a vital role in industries such as aerospace, automotive, and heavy engineering, where extreme hardness, wear resistance, and heat stability are essential. M42 Bars provide exceptional cutting efficiency, extended tool life, and dependable performance in high-speed and high-temperature machining operations, making them ideal for both precision and heavy-duty tooling applications.

hardness, wear resistance, and heat resistance. The cobalt content in M42 improves red-hardness, meaning that the tool remains sharp at elevated temperatures, which makes it ideal for high-speed machining and metalworking applications. These bars are further used in die, mold, and tap making, especially when high toughness along with durability is required for heavy duty applications. Such resistance to wear and thermal damage makes M42 a popular steel alloy in applications like aerospace, automotive, and tool-making industries.

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