4Cr13 Tool Steel

One. Product Description

4Cr13 Steel code S-136, is a Martensitic Stainless Steel, the steel has good machinability, after heat treatment (quenching and tempering), has excellent corrosion resistance, polishing, high strength and wear resistance, suitable for for the manufacture of plastic molds. Under the action of high load, high wear resistance and corrosive medium, transparent plastic molds, such as hot oil pumps, valve plates, valve bearings, medical equipment, springs and other parts.

Two. Quality Standard

GB/T 1220-1992 Standard Specification for Tool Steel Alloys

Three. Product Specifications

Four. Equivalent Grade of 4Cr13 Tool Steel - For Reference Only

Five. Product Features and Uses

Features:

1. High hardness.

2. Good corrosion resistance.

3. Strong wear resistance.

Use:

1. Used for high hardness, high wear resistance hot oil pump, valve plate, valve bearing, medical equipment, plastic mold, plastic mirror mold, spring and other parts.

2. Suitable for tableware (knife) and turbine blades with good corrosion resistance (magnetic), the hardness after quenching is higher than 440A steel (magnetic), blades, nozzles, valves, board rulers, tableware (scissors).

Six. Product Detailed Information

4Cr13 is only a hardened material, and 4Cr13 is characterized by a martensitic type.

Heat Treatment:

1. Annealing, slow cooling at 800～900℃ or fast cooling at around 750℃.

2. Quenching, 1050～1100℃ oil cooling.

3. Tempering, rapid cooling at 200～300℃.

Mechanical Hehavior:

Hardness: Annealed, ≤201HB, indentation diameter 3.9～4.3mm; Quenching, ≥50HRC

Microstructure: The structure is characterized by a martensitic type.

Delivery condition: The steel is delivered in the annealed condition.

Forging: Oil-quenched mold steel has a certain sensitivity to cracks. It is not suitable for rapid heating during forging heating. It is best to preheat once at 650 to 750 degrees. The forging heating temperature is 1130 to 1150 degrees, and the final forging temperature should be greater than 800 to 850 degrees. Take the upper limit temperature during ingot forging. Minimum temperature for forging without billet

Annealing: General annealing at 780-800 degrees, holding for 4-6 hours, cooling to 550 degrees and air cooling ≤ 50 degrees/hour, isothermal annealing at 700-800 degrees for 2-4 hours, and then holding at 670-720 degrees for 2-4 hours ≤ 50.