1.2714 | SKT4 | AISI L6

1.2714/AISI L6 Steel Grade

1.2714/AISI L6 Tool Steel Chemical Composition(%)

Supply Range

Surface Finish: Black, Peeled, Machined/Turned or as per given requirements.

Forged Round Bar: 20mm - 650mm (Dia)

Rolled Bars: 12mm - 360mm (Dia)

Forged flats: 30-400mm(T)*500-1200mm(W)

Rolled flats: 10-360mm(T)*30-1020mm(W)

Other sizes of O1 material or as per customer’s requirements.

1.2714/AISI L6 Tool Steel Heat Treatment

Forging: 

L6 Die Block Steels are forged at 1079°C (1975°F) down to 871°C (1600°F). These steels should not be forged below 843°C (1550°F).

Hardening:

-   Initial preheating to 350-450°C;

-   Second preheating to 650-750°C;

-   Heat to hardening temperature 860-890°Cand hold at temperature;

-   Cooling in hot oil (40-60°C); oil quenched hardness: 54-59HRC;

Tempering:

Tempering must be carried out within one hour from hardening(warm part) in the range 550-630°Cfor 4-6 hours according to hardness required, the dimensions of the parts and operating conditions.

Annealing:

-   Heat to 800°Cand hold at temperature for 1/2 h to 1 h;

-   Furnace cooling to 670°Cand hold at temperature for at least 10 hours;

-   Cool by 10°C/h to 630°C;

-   Cooling in air.

Maximum hardness:≤240 HB

Quenching:

Quench L6 tool steel in oil to 66-51°C (150-125°F).

5.1.2714/Applications of ASTM A681 L6 Tool Steel

AISI L6 cold working tool steel is for general purpose tools and dies where greater toughness is required, but with some sacrifice of abrasion-resistance.

Typically used below applications:

· spindles,

· forming rolls,

· punches,

· blanking and forming dies,

· trimmer dies,

· clutch parts,

· pawls,

· bearings,

· chucks parts,

· rollers,

· knuckle pins,

· clutch pins,

· shear blades