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Have you experienced the technical and commercial advantage of choosing TMCP

steel plates ?

The steel plates produced by TMCP have not only High Strength and toughness but

also outstanding weldability.

Conventionally it has been impossible to obtain these characteristics simultaneously

and one had to be chosen at the expense of the other.

But thanks to the development of TMCP, this revolutionary steel plate is now available.

Enjoy the benefits this new steel during fabrication and welding.

We're proud that JFE was the world's first company to develop the process for TMCPand has led TMCP technology ever since.

TMCPTMCP

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Fabrication Benefits by TMCP Steel PlatesFabrication Benefits by TMCP Steel Plates

Fabrication Benefits by TMCP Steel PlatesFabrication Benefits by TMCP Steel Plates

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Adding carbon and/or alloying elements is a well-known

procedure to increase strength, but this also increases Ceq and sodeteriorates weldability. The above figures show that TMCP offers

specific strength with low Ceq which improves weldability.

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Low Ceq obtained by TMCP offers

high toughness at the heat affected

zone of the weld, even when high

heat input welding is used for high

efficiency.

Additional Information

HAZ toughness is further improved

by special chemical treatment.

The treated plates are used in

combination with TMCP under high

heat input welding for low

temperature service. Please inform

us of the toughness requirementunder high heat input welding, and

we'll investigate.

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Characteristics of TMCP and Properties of

the Plates with Minimum Tensile Strength

Grade 550610N/mm2

Characteristics of TMCP and Properties of

the Plates with Minimum Tensile Strength

Grade 550610N/mm2

PartPart

Typical TMCP plates with high weldability, for which applicationsto JIS and other standards have been submitted for bridges.

penstocks, tanks and others, are presented below.

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Features of Chemical CompositionFeatures of Chemical Composition

Examples of Mechanical PropertiesExamples of Mechanical Properties

In order to attain high weldability,carbon and impurity elements are

severely restricted. Notably, a crack sensitivity parameter PCMis

introduced, and phosphorus is also reduced to achieve high toughness

under high heat input welding.

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Bead on plate Maximum HardnessBead on plate Maximum Hardness

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Forming & Heat treatmentForming & Heat treatment

Hot

Forming

Hot forming deteriorates the received

performance, and then is prohibited.

When hot forming is necessary,

please consult with JFE prior to order

Cold forming or warm forming

is available.

Temperature under 580C for

warm forming is recommended.

PWHT, if necessary, is recommended to be

excuted under 580C.

When PWHT is necessary,

please consult with JFE steel prior to order.

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Available Specification for TMCPAvailable Specification for TMCP

When a customer requests TMCP plates instead of conventional ones, please inform

us as we would like to design the chemical composition in line with the customer's

requirements, such as Ceq or PCM, plate thickness, applicable standard, and PWHT ifnecesarry, and we will also meet special toughness requirements other than the

standard, etc, and will inform the customer of our design results.

Many ASTM specifications are in force worldwide, and TMCP meets several of

them as shown above. If a material specification has already been selected in the

detail design and the specification does not allow TMCP, it is recommendable that

the specification be changed, if possible, to allow the use of TMCP.

In this case, there may be small differences in mechanical properties andchemical composition between the changed standard and the original one.

However, the properties can be adjusted in accordance with the original ones.

The specifications shown above are just typical examples ; TMCP is also applicable

in other specifications.

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