Tool and Die Steel D2 Bars

High-performance Tool and Die Steel D2 Bars from Neil Metals, a reputable manufacturer and supplier with headquarters in Kolkata, India, are renowned for their exceptional dimensional stability and wear resistance. Neil Metals is dedicated to providing precision-engineered products that satisfy stringent industrial standards and satisfy the rigorous requirements of cutting, die-making, and tooling applications. The business guarantees premium heat-treated and annealed D2 bars with exceptional strength and hardness. Neil Metals has established itself as a reputable supplier of tool steel for both domestic and international markets thanks to its quality control and dependable delivery.

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D2 Tool Steel Round Bar

Die Steel D2 Rods

D2 Tool and Die Steel Bar

What is Tool and Die Steel D2 Bars?

Die steel and tools D2 Bars are high-carbon, high-chromium cold work tool steels that air-harden. Typically, there is 1.50 percent carbon, 11.5–12.0% chromium, and trace amounts of vanadium and molybdenum. These elements offer good toughness, outstanding wear resistance, and high hardness (up to 60–62 HRC after heat treatment). Additionally, the steel shows good dimensional stability throughout the tempering and hardening processes. D2 is perfect for complex dies and tools that need a long service life under high-stress circumstances because of its high compressive strength and moderate machinability.

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Tool and Die Steel D2 Bars Specifications

Standard : ASTM A681, ASME SA681
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
Form : Round
Diameter : 10 mm ~ 900 mm
Size : 0.08 mm to 25.00 mm
Diameter Range : 0.040 mm – 12 mm (0.0016” – 0.4724”)
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 Tool and Die Steel D2 Bars

ASTM A681	C		Mn		P	S	Si		Cr		V		Mo
D2	1.4	1.6	0.1	0.6	0.03	0.03	0.1	0.6	11	13	0.5	1.1	0.7	1.2
DIN ISO 4957	C		Mn		P	S	Si		Cr		V		Mo
1.2379/X153CrMo12	1.45	1.6	0.2	0.6	0.03	0.03	0.15	1.6	11	13	0.7	1	0.7	1
JIS G4404	C		Mn		P	S	Si		Cr		V		Mo
SKD11	1.4	1.6		0.6	0.03	0.03		0.4	11	13	0.2	0.5	0.8	1.2

Mechanical Properties of Tool and Die Steel D2 Bars

Mechanical Properties	Metric	Imperial
Hardness, Knoop (converted from Rockwell C hardness)	769	769
Hardness, Rockwell C	62	62
Hardness, Vickers	748	748
Izod impact unnotched	77.0 J	56.8 ft-lb
Poisson’s ratio	0.27-0.30	0.27-0.30
Elastic modulus	190-210 GPa	27557-30457 ksi

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Equivalent Grades of Tool and Die Steel D2 Bars

Country	USA	German	Japan
Standard	ASTM A681	DIN EN ISO 4957	JIS G4404
Grades	D2	1.2379/X153CrMo12	SKD11

Thermal Properties of Tool and Die Steel D2 Bars

Properties		Conditions
Properties		T (°C)	Treatment
Thermal expansion	10.4 x 10^-6/ºC	20-100	–

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Tool and Die Steel D2 Bars Types

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Frequently Asked Questions (FAQ)

Can Tool and Die Steel D2 Bars Be Welded?

Tool and Die Steel D2 Bars can be welded, but it's challenging due to their high carbon content. Preheating, post-weld heat treatment, and using specific filler materials are essential.

Is Tool And Die Steel D2 Bars Corrosion-resistant?

Tool and Die Steel D2 Bars are semi-corrosion-resistant due to high chromium content (12%). While not fully stainless, they offer moderate resistance to rust in less aggressive environments.

How Should Tool and Die Steel D2 Bars Be Stored?

Tool and Die Steel D2 Bars should be stored in a dry, ventilated area to prevent moisture exposure. Use protective coatings like oil or rust inhibitors to minimize corrosion risk.

Tool and Die Steel D2 Bars Uses

Because of their exceptional resistance to wear, tool and die steel D2 bars are widely utilised in cold work tooling applications. They are perfect for punches, shear blades, knives, stamping tools, blanking dies, and forming dies. D2 steel is ideal for tools used in woodworking, plastic moulding, and metal stamping because of its high carbon-chromium content, which makes it resistant to abrasion. D2 also ensures long tool life and lower maintenance in thread rolling dies, slitter knives, and industrial knives. Because of its stability and strength, it can also be used for precision tooling in the heavy machinery, automotive, and aerospace industries.

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