High Speed Steel M35 Bars

Aung Metals, a prominent manufacturer and supplier located in Naypyidaw, Myanmar, is all about crafting top-notch High Speed Steel (HSS) M35 Bars. These bars are celebrated for their remarkable hardness, wear resistance, and toughness. By employing cutting-edge manufacturing techniques and rigorous quality control, Aung Metals guarantees that each M35 Bar not only meets international standards but also delivers reliable performance in tough industrial and machining environments. Known for their ability to maintain hardness even at high temperatures, HSS M35 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 manufacturing and machining applications.

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M35 Alloy High Speed Steel Bar

High Speed Steel M35 Round Rod

HSS M35 Bars

What is High Speed Steel M35 Bars ?

When it comes to composition, High Speed Steel M35 Bars are primarily made of iron, featuring around 0.85–1.0% carbon, 4–5% cobalt, 4% chromium, 2% molybdenum, and 6–7% 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, M35 steel boasts a tensile strength of 1100–1400 MPa, hardness ranging from 63 to 66 HRC, and commendable toughness. The material keeps its cutting edge even at elevated temperatures, shows excellent fatigue resistance, and allows for efficient machining and grinding, making it a go-to choice for high-performance tooling operations.

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High Speed Steel M35 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 M35 Bars

ASTM A600	C		Mn		P	S	Si		Cr		V		Mo		W		Co
M35	0.82	0.95	0.15	0.40	0.03	0.03	0.20	0.45	3.80	4.50	1.75	2.15	4.75	5.25	5.50	6.50	4.60	5.00
DIN ISO 4957	C		Mn		P	S	Si		Cr		V		Mo		W		Co
1.3243/HS6-5-2-5	0.87	0.95	…	0.40	0.03	0.03	…	0.45	3.80	4.50	1.70	2.10	4.70	5.20	5.90	6.70	4.50	5.00
JIS G4403	C		Mn		P	S	Si		Cr		V		Mo		W		Co
SKH55	0.87	0.95	…	0.40	0.03	0.03	…	0.45	3.80	4.50	1.70	2.10	4.70	5.20	5.90	6.70	4.50	5.00

Mechanical Properties of High Speed Steel M35 Bars

Temperature °C / °F
20 / 70		400 / 750	600 / 1110
Density	Kg/m³ lbs/in³	8150 .294	8050 .290	7990 .228
Modulus of Elasticity	kN/mm³² psi	230 34 · 10 6	205 31 · 10 6	184 27 · 10 6
Coefficient of Thermanl expansion from 20°C / 70°F	per °C per °F	–	11.6 · 10-6 6.4 · 10-6	11.9 · 10-6 6.6 · 10-6
Thermal Conductivity	W/m °C Btu/sq. ft. h °F/in.	24 166	28 194	27 187
Specific Heat	J/kg °C Btu/lb °F	420 0.10	510 0.12	600 0.14

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Equivalent Grades of High Speed Steel M35 Bars

Country	USA	German	Japan
Standard	ASTM A600	DIN EN ISO 4957	JIS G4403
Grades	M35	1.3243/HS6-5-2-5	SKH55

Thermal Properties of High Speed Steel M35 Bars

Thermal properties	Metric	Imperial
CTE, linear (@21 – 399°C / 69.8 – 750°F)	11.4 μm/m°C	6.33 μin/in°F
CTE, linear (@21 – 593°C /69.8 – 1100°F)	11.5 μm/m°C	6.39 μin/in°F

M35 High Speed Steel Bar Standard Sizes

Type	SIZES (mm)	SIZES (Inches)	ISO Tolerance
Cold Drawn and Ground	10.00 – 75.00	5/6″ – 2.50″	h8-h9-h10-h11
Peeled and Polished	40.00 – 150.00	1.50″ – 6.00″	h11, h11-DIN 1013
Peeled and Ground	20.00 – 50.00	3/4″ – 2.00″	h9-h10-h11
Cold Drawn and Polish	3.00 – 75.00	1/8″ – 3.00″	h8-h9-h10-h11

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High Speed Steel M35 Bars Types

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Frequently Asked Questions (FAQ)

Can High-speed Steel M35 Be Welded

Yes, High-Speed Steel M35 can be welded, but it requires careful control of heat and preheating. Post-weld heat treatment is often necessary to restore its hardness and performance.

Are High-Speed Steel M35 Bars Customizable?

Yes, High-Speed Steel M35 bars can be customized in terms of dimensions, shape, and surface finish. Machining and heat treatment processes can also be tailored to meet specific performance requirements.

How Should High-speed Steel M35 Bars Be Stored?

High-Speed Steel M35 bars should be stored in a dry, cool environment, away from moisture and extreme temperatures. They should be kept on racks to prevent contact with corrosive materials.

High Speed Steel M35 Bars Uses

High Speed Steel M35 Bars are a staple in the cutting tool, machining, and manufacturing sectors, thanks to their exceptional hardness, wear resistance, and heat resistance. You’ll find them in a variety of applications, including drills, taps, milling cutters, gear cutters, reamers, and precision cutting tools. They shine in high-speed machining operations where it’s crucial to maintain hardness and dimensional stability at elevated temperatures. M35 Bars deliver long-lasting performance, precision, and reliability, making them the perfect choice for creating industrial, automotive, aerospace, and tooling components that require durability and high efficiency.

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