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Vacuum Heat Treatment Furnace

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SS 410 Oil Hardening Furnace

410 stainless steel is a stainless steel grade produced in accordance with the American ASTM standard, which is equivalent to my country’s 1Cr13 stainless steel, S41000 (American AISI, ASTM). 0.15% carbon content, 13% chromium content, 410 stainless steel: has good corrosion resistance, machinability, general purpose blades, valves. 410 stainless steel heat treatment: solution treatment (℃) 800-900 slow cooling or 750 fast cooling.

1. SS 410 Features

1) High strength.

2) Excellent machinability.

3) Hardening occurs after heat treatment.

4) Magnetic.

5) Not suitable for harsh corrosive environment.

2. SS 410 Scope of Application

General knife and blade, mechanical parts, class 1 tableware (spoon, fork, knife, etc.).

3. SS 410 Chemical Composition

Chemical composition	C	Si	Mn	P	S	Cr
Standard	0.15	1.00	1.00	0.04	0.030	11.5~13.5
Generally	0.045	0.45	0.50	0.020	0.001	13. 0

4. SS 410 Physical Parameter

Density(g/cm)

Magnetic

Specific heat

25℃(J/kg.℃)

Thermal conductivity 100℃(W/m.℃)

Thermal expansion rate 20~100℃(10/℃)

7.70

Have

460

24.9

9.9

5. SS 410 Oil Hardening

The first quenching treatment: enter the oil hardening furnace below 500°C, heat to 970-1000°C, holding time not less than 2h, cool out of the furnace to below 200°C, and then air-cool to room temperature;

The first tempering treatment: enter the furnace below 350°C, heat to 700-740°C, hold time not less than 3h, and cool to room temperature after leaving the furnace;

The second quenching treatment: enter the oil hardening furnace below 500°C, heat to 870～910°C, holding time not less than 2.5h, cool the furnace oil to below 200°C, and then air-cool to room temperature;

Second tempering treatment: enter the furnace below 350°C, heat to 570-600°C, hold time not less than 4h, and cool to room temperature after leaving the furnace.

Further, the heating rate for heating to 970-1000°C in the first quenching treatment is 80-100°C/hour.

Further, the holding time of the first quenching treatment is effective thickness mm/40-33 mm hours.

Further, the heating rate for heating to 700-740°C in the first tempering treatment is 50-70°C/hour.

Further, the heat preservation time of the first tempering treatment is 1.5×effective thickness mm/40-33 mm hours.

Further, the heating rate for heating to 870-910°C in the second quenching treatment is 80-100°C/hour.

Further, the holding time of the second quenching treatment is effective thickness mm/40-33mm+0.5 hours.

Further, the heating rate for heating to 570-600°C in the second tempering treatment is 50-70°C/hour.

Further, the holding time of the second tempering treatment is 1.5×effective thickness mm/40-33mm+1 hour. The first quenching treatment: enter the furnace below 500°C, heat to 970-1000°C, holding time not less than 2h, cool out of the furnace to below 200°C, and then air-cool to room temperature;

The first tempering treatment: enter the furnace below 350°C, heat to 700-740°C, hold time not less than 3h, and cool to room temperature after leaving the furnace;

The second quenching treatment: enter the furnace below 500°C, heat to 870～910°C, holding time not less than 2.5h, cool the furnace oil to below 200°C, and then air-cool to room temperature;