Forged / Annealed L6 Alloy Tool Steel , Peeled / Turned Tool Steel Round Bars

Delivery Time:3-5 days
Certification:CE,FCC,MSDS

ASTM A681 AISI L6 Alloy Tool Steel , Hot Work Tool Steel Round Bars

Steel Grade:	L6	Application:	Die Steel, Mould Steel
Shape:	Round bar	Standard:	AISI, DIN, JIS, GB
Dimension:	Φ10 – 600 mm	Surface:	Black, Peeled, Turned, Grinded
Technique:	Hot Rolled, Forged	Ultrasonic Test:	100% UT Passed

Description:

◆ Equivalence

AISI / SAE	DIN / W.Nr	JIS	GB
L6	1.2713 1.2714	SKT4	5CrNiMoV

◆ Chemical Composition (%)

C	Si	Mn	P	S	Cr	Mo	V	Ni
0.65 0.75	0.10 0.50	0.25 0.80	≤ 0.030	≤ 0.030	0.60 1.20	≤ 0.50	--	1.25 2.00

◆ Dimensions

	Hot Rolled	Forged
Diameter (mm)	8-130	60-600
Length (mm)	2000-5800	2000-5800

◆ Delivery Condition

EAF+(ESR) or EAF+LF+VD+(ESR), Forged, Black surface or Machined surface (Peeled,

Turned, Grinded), UT 100% Passed.

We can offer Annealed and Q+T condition.

Annealed: Hardness≤248HB

Q+T: Hardness 370-410 HB

◆ Characteristics

1. A kind of Nickel-Chrome–Molybdenum-Vanadium steel for hardening in the stream of air or     in oil with high hardenability.

2. With high hardness after hardening, good resistance to the tempering, good toughness          and good firmness during the heat.

3. It resists quick temperature changes and also thermal fatigue.

4. The steel is well-workable during the heat and well-workable in the soft-annealed state.

◆ Applications

AISI / SAE L6 Quenching + Tempering condition is suitable for the application as forging dies, slides, punch heads, extruding stamps press tools, hot shear knives, extrusion press tools, die holders, support tools, tool holders, pressure plates

◆ Heat Treatment

Annealing

650 to 700°C

Slow controlled cooling in furnace at a rate of 10 to 20°C/hr (50 to 68°F/hr) down to approx. 600°C, (1112°F) further cooling in air.

Hardness after annealing: max. 248 HB.

Stress relieving

Approx. 650°C

Slow cooling in furnace; intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 - 2 hours.

Hardening

830 to 870°C / oil

870 to 900°C / air

Holding time after temperature equalization: 15 to 30 minutes.

Obtainable hardness:52 - 58 HRC in oil, 44 - 50 HRC in air.

Tempering

Slow heating to tempering temperature im- mediately after hardening / time in furnace 1 hour for each 20 mm of workpiece thickness but at least 2 hours / cooling in air. It is recommended to temper at least twice.

A third tempering cycle for the purpose of stress relieving may be advantageous.