High Speed Steel T42 Bars

Al Summan Metals, a leading manufacturer and supplier based in Dubai, UAE, is recognized for producing high-quality High Speed Steel (HSS) T42 Bars that are distinguished by their exceptional hardness, wear resistance, and toughness. Through the use of advanced manufacturing methods and strict quality control procedures, Al Summan Metals ensures that every T42 Bar meets international standards, delivering reliable performance in demanding industrial and machining conditions. Renowned for retaining their cutting efficiency even under high temperatures, HSS T42 Bars are ideal for tool-making, drilling, and a range of cutting operations. Al Summan Metals provides precision-engineered steel solutions that combine durability, superior performance, and lasting efficiency for critical industrial applications.

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T42 Alloy High Speed Steel Bar

HSS T42 Bars

High Speed Steel T42 Round Rod

What is High Speed Steel T42 Bars ?

High Speed Steel T42 Bars consist primarily of iron, with roughly 0.8–1.0% carbon, 3–4% cobalt, 3.75–4.5% chromium, 1.5–2% molybdenum, and 6–7% tungsten. This distinctive composition provides them with exceptional hardness, resistance to wear, and red hardness, which makes them well-suited for high-speed cutting tools. Mechanically, T42 steel delivers a tensile strength of 1100–1400 MPa, a hardness between 63 and 66 HRC, and remarkable toughness. The material retains its strength even under high temperatures, demonstrates superb fatigue resistance, and provides excellent machinability and grindability, making it perfect for precision tooling applications.

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High Speed Steel T42 Bars Specifications

Standard : ASTM A600, ASME SA600
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
Form : Round
Diameter : 2mm to 100mm as per the 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 and more

Chemical Compositions of High Speed Steel T42 Bars

Aisi No.	Work No.	C.	Si.	Mn.	Cr.	Mo.	V.	W.	Co.
T-42	1.3207	1.28	0.23	0.20	4.15	3.55	3.25	9.5	10.0

Mechanical Properties of High Speed Steel T42 Bars

Density	2.79 g/cm³
Melting Point	640 °C
Proof Stress	270 MPa
Tensile Strength	405 Min MPa
Elongation	12 Min %

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Equivalent Grades of High Speed Steel T42 Bars

Bohler	AISI	BS	IS	JIS	DIN
S 700	T42	BT42	XT125WCo10 CrMo4V3	SKH-57	(1.3207)

Thermal Properties of High Speed Steel T42 Bars

Thermal Expansion	23.10 x10^-6 /K
Modulus of Elasticity	73 GPa
Thermal Conductivity	121-193 W/m.K

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High Speed Steel T42 Bars Types

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Frequently Asked Questions (FAQ)

Can T42 Alloy High Speed Steel Bars Be Heat Treated?

Yes, T42 Alloy High-Speed Steel Bars are suitable for heat treatment. They are usually hardened using heat treatment methods such as quenching and tempering to improve hardness, wear resistance, and overall performance.

Can High Speed Steel T42 Bars Be Welded?

Welding T42 High-Speed Steel Bars is difficult because of their elevated carbon content and hardness. When welding must be done, preheating and post-weld heat treatment are frequently required to avoid cracking and maintain strength.

How Should High-speed Steel T42 Bars Be Stored?

T42 High-Speed Steel Bars ought to be kept in a cool, dry space to guard against rust and corrosion. They should be raised off the floor, preferably on pallets made of wood or plastic, and shielded from humidity and extreme temperatures.

High Speed Steel T42 Bars Uses

High Speed Steel T42 Bars find wide use across the cutting tool, machining, and manufacturing industries thanks to their outstanding hardness, resistance to wear, and heat resistance. Typical uses include drills, taps, milling cutters, gear cutters, reamers, and other precision cutting tools. They also serve in high-speed machining operations where preserving hardness and dimensional stability under high temperatures is essential. T42 Bars provide durable performance, high precision, and dependable operation, making them ideal for manufacturing components in the industrial, automotive, aerospace, and tooling sectors that require durability and efficiency.

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