DB6 – Die Block Steel (DIN 1.2714 / AISI L6 / SKT4)

Overview:

DB6, also known as DIN 1.2714, AISI L6, or SKT4, is a premium-grade hot work die steel engineered for high-performance tooling applications. It is highly recommended for closed die forging operations due to its excellent wear resistance, superior toughness, and durability. With a pre-hardened condition and hardness ranging from 360 to 430 BHN, DB6 steel offers outstanding strength and dimensional stability, even under extreme thermal and mechanical loads.

Key Properties:

• Excellent wear resistance

• High impact strength

• Good machinability in pre-hardened condition

• High hardenability

• Stable microstructure with fine toughness

• Excellent ultrasonic quality due to double tempering and high forging reduction

Physical Properties:

• Density: 7.85 g/cm³

• Forging Ratio: Minimum 4:1

• Hardness (BHN): 360 – 430

• Magnetic: Yes

Heat Treatment Guidelines:

• Preheating: 600°C – 700°C

• Hardening Temperature: 850°C – 880°C

• Quenching: Air or oil

• Tempering: Temper immediately after quenching while hand warm

• Tempering Duration: 1 hour per 25 mm of wall thickness

• Cooling: In furnace or air

Available Standards:

• DIN: 1.2714

• AISI: L6

• JIS: SKT4

• AFNOR: 55NCDV7

• Other equivalents: ESKY0S2 731, VMO, W500, UTOP EX2, GMKT4

Applications:

DB6 is extensively used in applications requiring robust performance under high impact and thermal stress conditions:

• Closed die forging dies

• Punches and coining dies

• Hot shear blades

• Extrusion and pressing tools

• Die holders and pressure plates

• Spindles and die shoes

• Trimmer dies and forming tools

Other Grades Available:

C45, EN8, EN9, EN19, EN24, EN31, EN36C, EN41B, EN47, EN353, IS2062, 42CrMo4, HCHCR, OHNS, D2, D3, H11, H13, M2, M35, M42, M48, SKD-11, P20 series, SAE 4140/4340/8620, 16MnCr5, 20MnCr5, C-series (C35–C60), CK45, 40C8, 45C8, 55C8, SAE 52100, S40C, S355J2G3, among others.

Service Areas:

We cater to a wide network across India, particularly in Uttar Pradesh, Rajasthan, and Haryana, covering cities like Kanpur, Lucknow, Jaipur, Jodhpur, Faridabad, Gurugram, and many more.