High Speed Steel T4 Bars

Anucha Metals is a trustworthy manufacturer and supplier of **High Speed Steel T4 bars**, based in Bangkok, Thailand. The company is renowned for offering high-grade tool steel solutions and provides T4-grade HSS bars suited for high-performance cutting and machining applications. With emphasis on accuracy, longevity, and customer satisfaction, Anucha Metals caters to customers in the automotive, aerospace, die-making, and engineering industries. Their T4 bars are manufactured employing high-tech machinery and rigorous quality control to produce consistent hardness, dimensional tolerance, and wear resistance. Anucha Metals remains a reliable supplier of high-quality HSS materials in Thailand and overseas.

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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 ?

**T4 bars of High Speed Steel** contain about 1.3% carbon, 18% tungsten, 4% chromium, and 1% vanadium. Tungsten-based alloy is very hard, resistant to abrasion, and has red hardness, which enables the T4 to remain sharp even at high temperatures. T4 has high compressive strength and can be used for tools subjected to great cutting forces. Though it is less tough than cobalt-containing grades like T15, it provides excellent performance for applications in high-speed cutting. The combination of good edge retention and wear resistance of the alloy renders it ideal for precision cutting tools for demanding machining situations.

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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 widespread application in the manufacture of cutting tools like lathe tools, milling cutters, reamers, saw blades, and planer knives. Their higher red hardness and wear resistance make them best suited for high-speed machining of hard and abrasive materials. T4 is used in the automotive, aerospace, and general engineering industries where the tool life and cutting accuracy are critical. These bars find application in metal-forming operations and die manufacturing too, providing consistent performance in operations involving continuous exposure to high temperatures and severe mechanical stress.

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