High Speed Steel T4 Bars

Luois Metals is a well-respected manufacturer and supplier of High Speed Steel T4 Bars based in Houston, USA. They specialize in providing top-notch tool steels that are designed for high-performance applications. High Speed Steel (HSS) T4 is a tungsten-based alloy celebrated for its remarkable wear resistance, exceptional cutting capabilities, and impressive red hardness, which allows it to maintain its hardness even at high temperatures. Luois Metals is committed to precision manufacturing and adheres to international standards, ensuring that their T4 bars meet the rigorous demands of various industries. These bars are a go-to choice in tooling, engineering, and manufacturing sectors where strength and durability are crucial.

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High Speed Steel T4 Round Rods

T4 Alloy High Speed Steel Bright Bars

T4 Alloy High Speed Steel Bars

What is High Speed Steel T4 Bars ?

The composition of High Speed Steel T4 Bars includes carbon, tungsten, chromium, vanadium, and cobalt. This unique blend results in outstanding hardness, excellent toughness, and high resistance to thermal softening. Tungsten boosts hot hardness and wear resistance, while cobalt enhances cutting efficiency even under extreme heat. After heat treatment, these bars demonstrate excellent tensile strength, stability, and dimensional accuracy. With their superior edge retention and abrasion resistance, HSS T4 bars are perfect for precision machining and cutting tasks that require reliable performance.

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High Speed Steel T4 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 T4 Bars

ASTM A600	C		Mn		P	S	Si		Cr		V		W		Mo		Co
T4	0.70	0.80	0.10	0.40	0.03	0.03	0.20	0.40	3.75	4.50	0.80	1.20	17.50	19.00	0.40	1.00	4.25	5.75
DIN ISO 4957	C		Mn		P	S	Si		Cr		V		W		Mo		Co
S 18-1-2-5/1.3255	0.75	0.83	…	0.40	0.03	0.03	…	0.45	3.80	4.50	0.80	1.20	17.50	18.50	0.50	0.80	4.50	5.50
JIS G4403	C		Mn		P	S	Si		Cr		V		W		Mo		Co
SKH3	0.73	0.83	…	0.40	0.03	0.03	…	0.45	3.80	4.50	0.80	1.20	17.00	19.00	…	…	4.50	5.50

Mechanical Properties of High Speed Steel T4 Bars

Density [g/cm3]	8.70
Properties	Metric	Imperial
Modulus of elasticity	190-210 GPa	27557-30458 ksi
Poisson’s ratio	0.27-0.30	0.27-0.30

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Equivalent Grades of High Speed Steel T4 Bars

Country	USA	German	Japan
Standard	ASTM A600	DIN EN ISO 4957	JIS G4403
Grades	T4/T12004	S 18-1-2-5/1.3255	SKH3

Thermal Properties of High Speed Steel T4 Round Bars

Properties	Metric	Imperial
Thermal expansion co-efficient	11.9 µm/m°C	6.6 µin/in°F

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High Speed Steel T4 Bars Types

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Frequently Asked Questions (FAQ)

How Are High Speed Steel T4 Bars Sized?

High Speed Steel T4 bars are sized by diameter and length, typically ranging from 1/4" to 10" in diameter, with standard lengths of 12 to 20 feet, depending on manufacturer specifications.

How Are High Speed Steel T4 Bars and Rods Manufactured?

High Speed Steel T4 bars and rods are manufactured through alloying, melting, forging, and heat treatment processes, followed by precision machining to achieve desired hardness, strength, and dimensional accuracy for industrial use.

How Should High-speed Steel T4 Bars Be Stored?

High-speed steel T4 bars should be stored in a dry, clean environment, protected from moisture and corrosion. Store them on flat, secure surfaces to prevent deformation or damage.

High Speed Steel T4 Bars Uses

High Speed Steel T4 Bars find extensive use in industries that need tools capable of withstanding high temperatures and heavy loads. In the tooling sector, they are essential for manufacturing drills, taps, reamers, milling cutters, and saw blades. The automotive and aerospace industries depend on them for components that face high stress and wear during machining processes. Engineering and industrial sectors utilize them in punches, dies, and cutting tools for shaping tough materials. Their ability to provide consistent performance and a long service life makes T4 bars indispensable for precision machining applications.

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