What is hardening & tempering?

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Hardening and Tempering is a thermal process that strengthens steel through a controlled heating and cooling process.

This process will result in improved mechanical properties and give a tougher more durable product. The hardening process involves heating the steel to above the critical temperature for the given grade and then rapidly cooling. Whilst this process achieves the highest mechanical stengths and hardness’s, steel in this condition is extremely brittle and therefore requires further treatment in the form of tempering. This consists of reheating the steel to a lower temperature and holding the steel at the given temperature for a given period of time. As with traditional annealing (used to soften steels) this process is conducted in an inert atmosphere to avoid oxidation.

The exact temperature and processing times vary with given grades of steel and the process is very specialized.

Stainless Steel : Hardened Tempered Steel Strip.

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These are Precision Steel Strips, anti corrossive and with a very fine micro-sturcture. The grains are super fine. We supply these strips in Grade S-Flex3. This steel has very high resistance power with Molybdenum .5%.

With C% .32, these strips can be supplied with a Tensile Strength of 1800/1900n/mm2.

S-Flex3 strips are supplied in Medical Industry, mainly for manufacturing Opthalmic Blades.

For more details, visit us at, www.btstrips.com

Steel sector on course of recovery.

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After witnessing weak production globally for the five quarters in a row, signs of green shoots are finally visible in the steel sector. There was a 1.8 per cent jump in the global steel output during the September quarter, thanks to a rebound in production in China.

“Bulk of the rebound in steel prices is driven by raw material price hikes along with some contribution from a less-worse demand scenario,” the brokerage firm said.

Global and Chinese steel prices have risen 56 per cent YTD (Year to date), bringing idle capacity on stream, as operations have become more viable. However, the sector is not completely out of the woods yet, the brokerage said.

Source:http://economictimes.indiatimes.com/articleshow/55602329.cms?utm_source=contentofinterest&utm_medium=text&utm_campaign=cppst

Hardened Tempered Steel Strip.

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Hardening and Tempering is a thermal process that strengthens steel through a controlled heating and cooling process.

This process will result in improved mechanical properties and give a tougher more durable product. The hardening process involves heating the steel to above the critical temperature for the given grade and then rapidly cooling. Whilst this process achieves the highest mechanical stengths and hardness’s, steel in this condition is extremely brittle and therefore requires further treatment in the form of tempering. This consists of reheating the steel to a lower temperature and holding the steel at the given temperature for a given period of time. As with traditional annealing (used to soften steels) this process is conducted in an inert atmosphere to avoid oxidation.

The exact temperature and processing times vary with given grades of steel and the process is very specialized.

Special Temper Steel Strips – As Rolled Hard.

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These are basically as rolled hard steel strip. To achieve a desired hardness, an annealed material of suitable thickness is taken and rolled down to the required thickness, to achieve that required hardness. After rolling, the material is pinch passed and final annealing is not required. To choose the correct thickness (for reduction to the desired thickness) is a matter of expertise.

Grades: This strip is available in low, medium & high carbon grades.

Applications: It is suitable for components where formability is limited. It saves the extra annealing cost. The strip is directly punched & formed and if required sent for heat treatment.

Influence of martensite composition and content on the properties of dual phase steels

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A study has been made of the mechanical properties of dual phase (martensite plus ferrite) structures produced when Fe-Mn-C alloys are quenched from the austenite plus ferrite phase field, so as to give a series of alloys with constant ferrite and martensite compositions but varying percent martensites. It is found that the strength of a dual phase structure is dependent on the ferrite grain size and the volume fraction of martensite, and is independent of the composition and strength of the martensite. In agreement with previous work the ductility of these steels is superior to that for standard HSLA steels at the same tensile strength. As shown in a previous paper the strength and ductility as a function of percent martensite are in agreement with Mileiko’s theory of composites of two ductile phases. This theory and the results indicate that the superior ductility of dual phase steels is largely a consequence of the high strength (fine grained), highly ductile (low interstitial content) ferrite matrix.

Hardened Tempered Steel Strip.

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Form of supply: Materials are supplied in coil form. If any special I.D. & O.D. requirements are there, that can be maintained. Further, material can also be supplied in cut lengths, if required by the customer.

Applications: Flat springs for automobile clutches, masonary and agricultral tools, gang saw blades for marble cutting, doctor blades, band knives, drop pins for textile industries, wood working saws, carpentary tools, coil springs, flapper values, etc.

Hardeneing and Tempering of steel strips.

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Hardening and Tempering is a thermal process that strengthens steel through a controlled heating and cooling process.
This process will result in improved mechanical properties and give a tougher more durable product. The hardening process involves heating the steel to above the critical temperature for the given grade and then rapidly cooling. Whilst this process achieves the highest mechanical stengths and hardness’s, steel in this condition is extremely brittle and therefore requires further treatment in the form of tempering. This consists of reheating the steel to a lower temperature and holding the steel at the given temperature for a given period of time. As with traditional annealing (used to soften steels) this process is conducted in an inert atmosphere to avoid oxidation.
The exact temperature and processing times vary with given grades of steel and the process is very specialized.

Stainless Steel Strip – Hardened & Tempered.

Prakash Leave a comment

These are Precision Steel Strips, anti corrossive and with a very fine micro-sturcture. The grains are super fine. We supply these strips in Grade S-Flex3. This steel has very high resistance power with Molybdenum .5%.

With C% .32, these strips can be supplied with a Tensile Strength of 1800/1900n/mm2.

S-Flex3 strips are supplied in Medical Industry, mainly for manufacturing Opthalmic Blades.

For more details, visit us at, www.btstrips.com

Supply of SPRING STEEL STRIPS.

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1. Spring Steel Strips: Hardened – Tempered & Annealed (EN-42, EN-47, C100S & HC-21);
2. Medium Carbon CRCA Steel Strips (C-30, C-40, C-55 & C-62);
3. CRCA Mild Steel Strip (D, DD, EDD, Fe410,ST42,QSTE500,etc.);

Our range of stock is exhaustive. Thickness range is .025mm to 5mm and width is 4mm to 600mm. For an in-depth knowledge of our product range, we invite you to visit us at: www.btstrips.com.