Tool and Die Steel D2 Bars

Mourad Metals is a well-respected manufacturer and supplier located in Tunis, Tunisia, specializing in high-quality Tool and Die Steel D2 Bars for demanding industrial needs. With a strong emphasis on precision metallurgy and unwavering quality, the company provides D2 steel bars that adhere to strict international standards. Mourad Metals employs cutting-edge manufacturing techniques, rigorous quality control, and deep technical know-how to guarantee outstanding performance and reliability. Catering to both local and global markets, the company is dedicated to timely deliveries, competitive pricing, and customer-centric solutions, supporting toolmakers, engineers, and manufacturers who need durable, high-performance materials for critical tooling and production environments around the world today.

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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?

Tool and Die Steel D2 is a high-carbon, high-chromium, air-hardening cold-work tool steel that includes carbon, chromium, molybdenum, vanadium, manganese, and silicon in its composition. This unique blend offers remarkable wear resistance, impressive compressive strength, and excellent hardenability. After heat treatment, D2 steel typically reaches hardness levels of 58–62 HRC while maintaining good dimensional stability. It provides moderate toughness and outstanding abrasion resistance, along with decent machinability in its annealed state, making it ideal for long-lasting tooling applications that demand durability and consistent performance even in harsh operating conditions.

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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

Tool and Die Steel D2 Bars are extensively utilized in scenarios where exceptional wear resistance and prolonged tool life are crucial. Typical applications include blanking dies, punches, forming and drawing tools, shear blades, extrusion dies, and slitting knives. D2 steel is also employed for gauges, rolls, and machine components that face high abrasion and pressure. Its air-hardening properties help reduce distortion, ensuring that tools maintain their shape and effectiveness over time.

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