High Speed Steel T42 Bars

Chung Metal offers High Speed Steel T42 bars, a high alloy tool steel that provides excellent performance in cutting and wear applications. Our T42 rods are heat-treated, precision ground, and certified for mechanical and metallurgical requirements. Machining industries and tool manufacturers rely on T42 for tool blanks and stock utilized in applications where toughness and hardness under thermal stress are required.

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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 ?

HSS T42 is generally a tungsten or molybdenum alloyed, high-vanadium tool steel with a high carbon content (e.g. ~1.2%). It can attain hardness of ~62–67 HRC in fully heat treated condition, and it has good resistance to wear and good hardness retention at high temperatures. Toughness is relatively lower than in softer steels, but the alloying allows for improved tool life under abrasion or higher-speed cutting.

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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 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 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 can be heat treated. They are typically hardened through heat treatment processes like quenching and tempering to enhance hardness, wear resistance, and performance.

Can High Speed Steel T42 Bars Be Welded?

Welding T42 High-Speed Steel Bars is challenging due to their high carbon content and hardness. If welding is required, preheating and post-weld heat treatment are often necessary to prevent cracking and ensure strength.

How Should High-speed Steel T42 Bars Be Stored?

T42 High-Speed Steel Bars should be stored in a dry, cool environment to prevent rust and corrosion. They should be kept off the ground, ideally on wooden or plastic pallets, and protected from moisture and extreme temperatures.

High Speed Steel T42 Bars Uses

Applied in heavy-duty cutting, reamers, milling cutters, broaches, hob cutters, and other such tools exposed to heavy abrasive wear. Also utilized in die cutting, form tools, and shape tools. T42 bars are selected when there is a requirement for longer tool life in comparison to regular tool steels, particularly in tough machining conditions.

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