Tool and Die Steel D2 Bars

Tool and Die Steel D2 Bars are well-known for their outstanding wear resistance, impressive hardness, and excellent dimensional stability, making them perfect for precision tooling tasks. Produced under strict quality control measures, these bars deliver reliable performance even in tough industrial settings. Thanks to their high carbon and chromium content, they boast superior surface hardness and remarkable durability, which is why D2 bars are often the go-to choice for tools that need to maintain a sharp edge and resist wear. They’re widely utilized in industries where precision, strength, and wear resistance are crucial for smooth and dependable operations.

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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?

These D2 Bars are primarily made from a high carbon and high chromium alloy, giving them exceptional hardness, wear resistance, and a bit of toughness. Mechanically, they shine with high compressive strength, excellent abrasion resistance, and good dimensional stability after heat treatment. D2 steel bars keep their properties intact even after repeated use, making them ideal for crafting cutting and forming tools that face significant friction and wear. This blend of toughness and hardness allows them to excel in cold-work tooling applications.

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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

You’ll find Tool and Die Steel D2 Bars commonly used to create cutting tools, punches, dies, shear blades, knives, and forming tools. They’re particularly suited for cold-work applications in sectors like automotive, metalworking, and manufacturing, where high wear resistance and long tool life are vital. D2 bars are also employed in blanking, stamping, and die-casting processes, delivering dependable performance under repeated mechanical stress. With their unique combination of hardness, durability, and dimensional stability, D2 steel bars guarantee precise and long-lasting performance in demanding tooling and manufacturing tasks.

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