High Strength Hot Work Tool Steel 1.2740

1.2740 Tool Steel, also known as 55NiCrMoV7, is a nickel-chromium-molybdenum alloyed hot work tool steel with excellent toughness, hardenability, and thermal fatigue resistance. It is particularly suitable for heavy-duty hot forming tools that require high impact strength and resistance to thermal shock.

Specifications of 1.2740 Tool Steel:

Grade	1.2740
Thickness tolerance	-0 to +0.1mm
Flatness	0.01/100mm
Technology	Hot Work / Forged / Cold Drawn
Surface roughness	Ra ≤1.6 or Rz ≤6.3

 

Chemical Composition 55NiCrMoV7 steel:

C	Cr	Si	P	Mn	Ni	Mo	V	S
0.24-0.32	0.6-0.9	0.3-0.5	0.03	0.2-0.4	2.3-2.6	0.5-0.7	0.25-0.32	0.03

 

Key Features DIN 1.2740 alloy steel:

• High toughness – excellent resistance to impact and cracking

• Thermal fatigue resistance – ideal for repeated heating/cooling cycles

• Good hardenability – suitable for large cross-section parts

• Tempering stability – maintains hardness at high temperatures

• Excellent heat treatability – achieves 48–52 HRC after quenching and tempering

• Moderate machinability – easy to machine in annealed condition

FAQ

Q1: What is 1.2740 tool steel used for?
A: It is commonly used for hot forging dies, die holders, hot shear blades, and tools subjected to high impact and temperature cycles.

Q2: Is 1.2740 equivalent to AISI L6?
A: It is partially similar to AISI L6 in composition, but DIN 1.2740 offers higher nickel content and better high-temperature performance.

Q3: What is the typical hardness after heat treatment?
A: After hardening and tempering, 1.2740 can reach 48–52 HRC, suitable for heavy-duty hot working tools.

Q4: What product forms are available?
A: We offer round bars, forged flat bars, plates, blocks, and custom-machined parts per your drawing.

Why Choose SAKYSTEEL :

Reliable Quality – Our stainless steel bars, pipes, coils, and flanges are manufactured to meet international standards such as ASTM, AISI, EN, and JIS. Strict Inspection – Every product undergoes ultrasonic testing, chemical analysis, and dimensional control to ensure high performance and traceability. Strong Stock & Fast Delivery – We maintain regular inventory of key products to support urgent orders and global shipping. Customized Solutions – From heat treatment to surface finish, SAKYSTEEL offers tailor-made options to match your exact requirements. Professional Team – With years of export experience, our sales and technical support team ensures smooth communication, quick quotations, and full documentation service.

SAKY STEEL'S Quality Assurance (including both Destructive and Non-Destructive) :

1. Visual Dimension Test 2. Mechanical examining like tensile, Elongation and reduction of area. 3. Impact analysis 4. Chemical examination analysis 5. Hardness test 6. Pitting protection test 7. Penetrant Test 8. Intergranular Corrosion Testing 9. Roughness Testing 10. Metallography Experimental Test

Custom Processing Capabilities:

• Cut-to-size service

• Polishing or surface conditioning

• Slitting into strips or foil

• Laser or plasma cutting

• OEM/ODM welcome

SAKY STEEL supports custom cutting, surface finish adjustments, and slit-to-width services for N7 nickel plates. Whether you need thick plates or ultra-thin foil, we deliver with precision.

SAKY STEEL'S Packaging:

1. Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging. 2. Saky Steel's pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,