Tool and Die Steel D2 Bars

George Metals Located in Houston, USA, offers to manufacture and supply high quality metal products such as Tool and Die Steel with specialties in Tool and Die Steel D2 Bars which stands out for high hardness, abrasion resistance and dimension stability. They can be suitable to be applied on tooling parts, mainly used in making of dies and punches, to give precision accuracy where durability is one of the necessary requirements of use. George Metals has made sure that D2 bars are in many sizes and suited to various industries’ specific requirements, bringing with them outstanding reliability and quality for their customers.

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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?

D2 tool and die steel bar is a high-carbon, high-chromium steel known for its excellent resistance to wear, hardness, and toughness. It generally contains about 1.50% carbon, 12.00% chromium, 0.90% molybdenum, and 0.80% vanadium along with trace amounts of manganese, silicon, and phosphorus. Upon heat treatment, D2 steel reaches a hardness of around 58-62 HRC, which makes it very suitable for applications with high wear-resistance requirements, e.g., punches and dies and shear blades. Some other mechanical properties include high tensile strength, good machinability, and resistant to abrasive wear albeit at greater risk of fracturing owing to the brittleness.

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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

D2 tool and die steel bars are extensively used in the manufacturing industries, where high wear resistance and durability are necessary. Typical applications include cutting tools, dies, molds, punches, shear blades, and stamping tools. Because of its high hardness and resistance to abrasion, it is used as a forming and shaping agent for metals, plastics, and other materials. D2 is also employed in cold working tools such as blanking dies, threading tools, and deep drawing die presses, where high precision and durability are required. While D2 is still popular among manufacturers in automotive, aerospace, and metalworking industries for tools that are subject to high wear, it is rather brittle when subjected to impact.

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