Lamineries Matthey
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Bandes et feuilles de précision laminées à froid

Membranes, snap domes and bursting discs

Membranes and bursting discs are used in a variety of applications. Material specifications are therefore extremely diverse. The main applications for the thin strips of Lamineries MATTHEY in this sector can be divided into three groups: pressure sensors, bursting discs and snap switches.

Precision strip used in membranes for pressure sensors must have a blemish-free surface, should be highly formable, absolutely impermeable, dimensional uniformity and corrosion-resistant to the ambient medium. Lamineries MATTHEY also offers solutions in the area of safety engineering. Application examples include bursting discs, decoupling systems to protect against explosion, flames and sparks, explosion pressure absorption systems and flame and detonation. The main characteristics of the thin strip and foil used in these applications are dimensional uniformity, corrosion resistance in the ambiant environment and constant mechanical properties. The airbag gas generator in an automobile which enables the bag to inflate in a fraction of a second in case of an accident is a good example for the application of such cold-rolled products. The disc which prevents overpressure must burst in a pre-defined fashion to enable a controlled deflation of the airbag, is an essential component which must be fully functioning during the whole life of the vehicle.

In the area of safety engineering and membranes for pressure sensors, Lamineries MATTHEY is one of the principal suppliers of precision strip and foil. Please find below a selection of alloys for this field of application:

Nickel and Nickel alloys Technical file
Ni - Nickel 200 / 2.4068 / N02200 
Ni - 2.4061 / 2.4060 / 2.4066 / Nickel 201/200 / N02200 / N02201 
Ni - Nickel hohe Reinheit 99.8% / 2.4061 / N02201  
NiCr15Fe - (Inconel) Alloy 600 / ~ 2.4816 / N06600 
NiCr19Fe18.5Mo3 Alloy 718 (Inconel, Hastelloy) / N07718 / 2.4668     All_X718_C.pdf
NiCr22Fe18Mo9 Alloy X (Inconel, Hastelloy) / N06002     All_X_C.pdf
NiCr22Mo9Fe5 - (Inconel) Alliage 625 / ~ 2.4856 / N06625 
NiCu30Fe - (Monel) Alloy 400 / 2.4360 / N04400 
NiMo16Cr15W - (Hastelloy) All. C-276 / 2.4819 / N10276 
NiMo29Cr2Fe2 Hastelloy B-3 / N10675 / 2.4600 
Maraging steels (Durnico, Durinox) and Phynox Technical file
Duratherm® 600 / 2.4781  
Stainless steels Technical file
1.4401 - Stainless steel / X5CrNiMo17-12-2 / ~ AISI 316 
1.4404 - Stainless steel / X2CrNiMo17-12-2 / ~ AISI 316L 
1.4435 - Stainless steel / X2CrNiMo18-14-3 / ~ AISI 316L     1.4435_C.pdf
1.4571 - Stainless steel / X6CrNiMoTi17-12-2 / ~ AISI 316Ti 
M 350 - Precipitation hardening stainless steel / S35000 / AISI 633  
Beryllium Copper and Beryllium Nickel Technical file
CuBe2 - Alloy 25 / C17200 / CW101C     CuBe2_All._25_C.pdf
CuBe2 - Alloy 190 mill hardened / C17200 / CW101C     CuBe2_All._190_C.pdf
NiBe2 - Alloy 360 / N03360     Alloy_360_C.pdf
Coppers and low alloyed coppers Technical file
Cu-ETP - E Cu 58 / Cu a1 (Cu99) / CW004A / C11000     Cu-ETP_C.pdf
Cu-OF - OF-Cu / Cu c1 / CW008A / C10200     Cu-OF_C.pdf
Cu-OFE - OFE-Cu / C10100     Cu-OFE_C.pdf
Copper alloys Technical file
CuNi12Zn24 - Nickel Silver (M12) / CW403J / ~ C75700     CuNi12Zn24_M12_C.pdf
CuNi18Zn20 - Nickel Silver (M18) / CW409J / ~ C76400     CuNi18Zn20_M18_C.pdf
Other specialties Technical file
Alloy 902 (Thermelast®) / N09902 / ~ Ni-Span-C Alloy 902® 
Ta - Tantalum / R05200 
Ti - Titanium Grade 1 / 3.7025 / R50250     Ti_Grade_1_C.pdf
Ti - Titanium Grade 2 / 3.7035 / R50400 

See also dimensional tolerances and material safety datasheet (MSDS) :

 

Mechanical strength, long life expectancy and high corrosion resistance play an important role in the design of snap switches (snap domes) which are increasingly used in key boards and control panels. The broad range of spring materials with narrowly defined chemical compositions offered by Lamineries MATTHEY allows the design of of snap domes with a practically constant force-deformation ratio across the working temperature range and which offer above standard life expectancy. Please find below a selection of those alloys we supply for this application:

Other alloys are also available. There is a list with all presently available alloys.

Stainless steels Technical file
1.4310 - Stainless steel / X10CrNi18-8 / ~ AISI 301     1.4310_C.pdf
1.4310.4 - Stainless steel / X10CrNi18-8 / ~ AISI 301     1.4310.4_C.pdf
Beryllium Copper and Beryllium Nickel Technical file
CuBe2 - Alloy 25 / C17200 / CW101C     CuBe2_All._25_C.pdf
CuBe2 - Alloy 190 mill hardened / C17200 / CW101C     CuBe2_All._190_C.pdf
Copper alloys Technical file
CuSn6 - Phosphor Bronze, 6% / CW452K / C51900 
CuSn8 - Phosphor Bronze, 8% / CW453K / C52100 
CuZn23Al3Co - Special Brass / CW703R / ~C68800 
Other specialties Technical file
CuNi15Sn8 - BrushForm® 158 / ToughMet 3 / C72900     BF158_T3_C.pdf
CuNi15Sn8 - BrushForm® 158 mill hardened (Toughmet 3) / C72900     BF158_T3_C.pdf
Aluminium alloys Technical file
AlMg3 - (Peraluman 300) / AW5754     AlMg3_C.pdf
AlMg4.5Mn (Peraluman 460) / AW-5083 / AA5083 

See also dimensional tolerances and material safety datasheet (MSDS) :

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