Quenching and tempering, which is a heat treatment process that is normally carried out on the final finishing stage of pieces, determines high mechanical properties.
JINDALAI supply Cold Worked, Hot Rolled and Forged Steels for Quenching and Tempering providing customized supply solutions based on specifications and other specific requirements in order to meet every customer’s need in terms of grades and profiles. Our company, with its 10 branch-offices in China and an annual distribution capacity amounting to 200,000 Tons, is the perfect partner to expand your business.
What Is Quench & Tempered Steel?
All steel contains some carbon, which makes it harder. Too much carbon can weaken the steel’s integrity. The quench and temper processes are used to increase the mechanical properties of carbon steel without the addition of more carbon.
High-carbon steel has a 0.60 to 1.00% ratio of carbon content compared to the 0.05 to 0.25% ratio of mild steel. When high-carbon steel goes through the quench and temper process, its mechanical properties make it more wear-resistant and durable.
This process also exposes the metal stock to both rapid cooling (quenching) and re-heating with a slower cooling process (tempering). Both the quenching and tempering processes are responsible for adding strength and toughness to steel.
Process steps For Quenching and Tempering
In order to influence the hardness and the strength of a steel, a special heat treatment, called quenching and tempering, has been developed. Quensching and tempering can be divided into three basic steps:
Austenitizing → heating to above the GSK line into the austenite region
Quenching → rapid cooling up below γγ-αα-transformation
Tempering → re-heating to moderate temperatures with slow cooling
| Grades | Material-No. | Yield point Rp0,2 (MPa) | Tensile Strength Rm (MPA) | Elongation A (in %) min. |
| 38Cr2 | 1.7003 | 550 | 800-950 | 14 |
| 46Cr2 | 1.7006 | 650 | 900-1000 | 12 |
| 34Cr4 | 1.7033 | 700 | 900-1100 | 12 |
| 34CrS4 | 1.7037 | 700 | 900-1100 | 12 |
| 37Cr4 | 1.7034 | 750 | 950-1150 | 11 |
| 37CrS4 | 1.7038 | 750 | 950-1150 | 11 |
| 41Cr4 | 1.7035 | 800 | 1100-1200 | 11 |
| 41CrS4 | 1.7039 | 800 | 1100-1200 | 11 |
| 25CrMo4 | 1.7218 | 700 | 900-1100 | 12 |
| 25CrMoS4 | 1.7213 | 700 | 900-1100 | 12 |
| 34CrMo4 | 1.7220 | 800 | 1000-1200 | 11 |
| 34CrMoS4 | 1.7226 | 800 | 1000-1200 | 11 |
| 42CrMo4 | 1.7225 | 900 | 1100-1300 | 10 |
| 42CrMoS4 | 1.7227 | 900 | 1100-1300 | 10 |
| 50CrMo4 | 1.7228 | 900 | 1100-1300 | 9 |
| 34CrNiMo6 | 1.6582 | 1000 | 1200-1400 | 9 |
| 30CrNiMo8 | 1.6580 | 1050 | 1250-1450 | 9 |
| 35NiCr6 | 1.5815 | 740 | 880-1080 | 12 |
| 36NiCrMo3 | 1.6773 | 1050 | 1250-1450 | 9 |
| 39NiCrMo3 | 1.6510 | 785 | 980-1180 | 11 |
| 30NiCrMo16-6 | 1.6747 | 880 | 1080-1230 | 10 |
| 51CrV4 | 1.8159 | 900 | 1100-1300 | 9 |
| 20MnB5 | 1.5530 | 700 | 900-1050 | 14 |
| 22MnB5 / MBW-W1500 (guideline) | 1.5528 | 1000 | 1500 | 5 |
| 30MnB5 | 1.5531 | 800 | 950-1150 | 13 |
| 38MnB5 | 1.5532 | 900 | 1050-1250 | 12 |
| 27MnCrB5-2 | 1.7182 | 800 | 1000-1250 | 14 |
| 33MnCrB5-2 | 1.7185 | 850 | 1050-1300 | 13 |
| 39MnCrB5-2 | 1.7189 | 900 | 1100-1350 | 12 |
Benefits of Quenched & Tempered Steel
As mentioned previously, there are many benefits of quenched and tempered steel, including:
Increased Strength
Increased Toughness
Less Distortion
Predictable Physical Properties
Applications of Quenched & Tempered Steel
Machining & Cutting Tools
Bridge Erection
High-Rise Structures
Heavy Construction Equipment
Chemical Storage Tanks
Dump Truck Liners
Industrial Machinery
Stronger & Lighter Cars
Forestry Equipment
The special feature of these grades is their formability in hot-rolled condition and their high strength after heat treatment. The strength properties are achieved in addition to the carbon and manganese especially by the low proportion of boron.
Jindalai can supply the steel grades described as coil, slitted coils, sheets and cutted pieces. If you need further information regarding grades, prices and lead times, ask us for a quote with no obligation; you will receive our quotation. Contact us now! Tel: +86 18864971774
WhatsApp at https://wa.me/18864971774 . Email: jindalaisteel@gmail.com Website: www.jindalaisteel.com
Post time: Jun-26-2023