Plates Type METAGRAPH – L

Description

Plates made of pure expanded graphite with excellent chemical stability and excellent resistance to creep reinforced with smooth metallic insert.

Applications

Suitable for heavy duty applications with low loads of torque, good for high temperature and pressure cycles or thermal-mechanical shock, steam, chemically aggressive fluids except strong oxidizing agents.

Density

DIN3754

1,2 g/Cm3

Max. work range temperature
with air or oxidizing substance

450°C

Inert fluid but with coupling exposed to air

550°C

Environment of the joint fluid and inert

ASTM F 36 

800°C

Min. work range temperature
Maximum pressure of security in continuous operation

40 bar

Compressibility

ASTM F36

45%

Elasticity

ASTM F36

10 / 15 %

Stress retention

DIN52913

45%

Stress relaxation a 400°C

BSI F 125

< 5

Resistance to crushing σvo(RT)

DIN 28090

100 N/mm2

Resistance to crushing σBo (300°C)

DIN 28090

60 N/mm2

Tensile strenght (min.)

ASTM F 104

25 N/mm2

Permeabiity to nitrogen 40 bar, RT

DIN 3535/4

< 0,6 ml/min.

Carbon content

99%

Leachable chloride content

≤ 50 ppm

Leachable fluoride content

≤ 50 ppm

Factors Clamping ROTT test ASTM / ASME code
Gb

5.6 N/mm2

A

0,377

Gs

0,0005N/mm2

*The data listed depend on a variety of factors (state of the joints, dimensions, clamping, thermal and mechanical shock etc.) To which can be indicated for orientation purpose.

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