Nord-Lock alkuperäiset aluslevyt
Nord-Lock alkuperäiset aluslevyt
Nord-Lock Steel Washers |
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Applications | General steel applications | |||
Material standard | EN 1.7182 | |||
Size range | M3-M130 #5 to 5" |
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Corrosion resistance | Minimum 1,000 hours in salt spray test (according to ISO 9227) | |||
Hardening | Through hardened | |||
Washer hardness* | ≥ 465HV1 | |||
Coating | Delta Protekt® KL100 zinc flake coating | |||
Bolt grades | Up to 12.9 | |||
Temperature range*** | -50°C to 200°C | |||
Product designation | NL NLsp |
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Laser marking type code | flZn |
* Washer hardness must be greater than the hardness of the mating surfaces in order to assure its mechanical function.
*** Temperature recommendations are based on information from the raw material supplier and testing. The locking function is not affected within the specified range.
Nord-Lock Stainless Steel Washers |
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Applications | General stainless steel applications | |||
Material standard | EN 1.4404 | |||
Size range | M3-M80 #5 to 3 1/8" |
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Corrosion resistance | PREN 27** | |||
Hardening | Surface hardened | |||
Washer hardness* | ≥ 520HV0,05 | |||
Bolt grades | Up to A4-80 | |||
Temperature range*** | -160°C to 500°C | |||
Product designation | NLss NLspss |
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Laser marking type code | SS |
* In order to assure the unique mechanical locking function of the Nord-Lock washers, the hardness of the mating surfaces must be lower than the hardness of the Nord-Lock washers.
** PREN (Pitting Resistance Equivalent Number) = %Cr + 3,3x%Mo + 16x%N. Figures in table valid for base material.
*** Temperature recommendations based on information from the raw material supplier and from tests. Locking function not affected within the specification.
Nord-Lock 254 SMO® Washers |
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Applications | Corrosive environment – chloride rich environments, offshore, pumps, heat exchangers, nuclear, food, medical, processing | |||
Material standard | EN 1.4547 | |||
Size range | M3-M39 #5 to 1 1/2" |
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Corrosion resistance | PREN 45** | |||
Hardening | Surface hardened | |||
Washer hardness* | ≥ 600HV0,05 | |||
Temperature range*** | -160°C to 500°C | |||
Product designation | NLss-254 NLspss-254 |
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Laser marking type code | 254 |
* In order to assure the unique mechanical locking function of the Nord-Lock washers, the hardness of the mating surfaces must be lower than the hardness of the Nord-Lock washers.
** PREN (Pitting Resistance Equivalent Number) = %Cr + 3,3x%Mo + 16x%N. Figures in table valid for base material.
*** Temperature recommendations based on information from the raw material supplier and from tests. Locking function not affected within the specification.
Nord-Lock Alloy C-276 Washers |
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Applications | Acidic environment – chemical industry, evaporators, offshore, downhole tooling | |||
Material standard | EN 2.4819 or equivalent | |||
Size range | M4-M20 #8 to 1 1/2" |
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Corrosion resistance | PREN 68** | |||
Hardening | Surface hardened | |||
Washer hardness* | ≥ 520HV0,05 | |||
Temperature range*** | -160°C to 500°C | |||
Product designation | NLss-276 NLspss-276 |
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Laser marking type code | 276 |
* In order to assure the unique mechanical locking function of the Nord-Lock washers, the hardness of the mating surfaces must be lower than the hardness of the Nord-Lock washers.
** PREN (Pitting Resistance Equivalent Number) = %Cr + 3,3x%Mo + 16x%N. Figures in table valid for base material.
*** Temperature recommendations based on information from the raw material supplier and from tests. Locking function not affected within the specification.
Nord-Lock Alloy 718 Washers |
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Applications | High temperatures – gas turbines, turbo charges, incinerators | |||
Material standard | EN 2.4668 or equivalent | |||
Size range | M4-M20 #5 to 1 1/2" |
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Corrosion resistance | PREN 29** | |||
Hardening | Surface hardened | |||
Washer hardness* | ≥ 620HV0,05 | |||
Temperature range*** | -160°C to 700°C | |||
Product designation | NLss-718 NLspss-718 |
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Laser marking type code | 718 |
* In order to assure the unique mechanical locking function of the Nord-Lock washers, the hardness of the mating surfaces must be lower than the hardness of the Nord-Lock washers.
** PREN (Pitting Resistance Equivalent Number) = %Cr + 3,3x%Mo + 16x%N. Figures in table valid for base material.
*** Temperature recommendations based on information from the raw material supplier and from tests. Locking function not affected within the specification.
All types of Nord-Lock washers |
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Material type | ||||
Steel | Stainless steel (ss) |
254 SMO® | ALLOY C-276 |
ALLOY 718 |
Applications | ||||
General steel applications | General stainless steel applications | Corrosive environment – chloride rich environments, offshore, pumps, heat exchangers, nuclear, food, medical, processing | Acidic environment – chemical industry, evaporators, offshore, downhole tooling | High temperatures – gas turbines, turbo charges, incinerators |
Material standard | ||||
EN 1.7182 | EN 1.4404 | EN 1.4547 | EN 2.4819 or equivalent | EN 2.4668 or equivalent |
Size range | ||||
M3-M130 #5 to 5" |
M3-M80 #5 to 3 1/8" |
M3-M39 #5 to 1 1/2" |
M4-M20 #8 to 1 1/2" |
M4-M20 #5 to 1 1/2" |
Corrosion resistance | ||||
Minimum 1,000 hours in salt spray test (according to ISO 9227) | PREN 27** | PREN 45** | PREN 68** | PREN 29** |
Hardening | ||||
Through hardened | Surface hardened | Surface hardened | Surface hardened | Surface hardened |
Washer hardness* | ||||
≥ 465HV1 | ≥ 520HV0,05 | ≥ 600HV0,05 | ≥ 520HV0,05 | ≥ 620HV0,05 |
Coating | ||||
Delta Protekt® KL100 zinc flake coating | - | - | - | - |
Bolt grades | ||||
Up to 12.9 | Up to A4-80 | Up to A4-80 | Up to A4-80 | Up to A4-80 |
Temperature range*** | ||||
-50°C to 200°C | -160°C to 500°C | -160°C to 500°C | -160°C to 500°C | -160°C to 700°C |
Product designation | ||||
NL NLsp |
NLss NLspss |
NLss-254 NLspss-254 |
NLss-276 NLspss-276 |
NLss-718 NLspss-718 |
Laser marking type code | ||||
flZn | SS | 254 | 276 | 718 |
* In order to assure the unique mechanical locking function of the Nord-Lock washers, the hardness of the mating surfaces must be lower than the hardness of the Nord-Lock washers.
** PREN (Pitting Resistance Equivalent Number) = %Cr + 3,3x%Mo + 16x%N. Figures in table valid for base material.
*** Temperature recommendations based on information from the raw material supplier and from tests. Locking function not affected within the specification.
Valintaopas
Valinta kriteerit | ||||
Teräksisest | Ruostumattomasta teräksestä valmistetut | 254 SMO® | ALLOY C-276 |
ALLOY 718 |
Terästyyppi | ||||
EN 1.7182 | EN 1.4404 | EN 1.4547 | EN 2.4819 tai vastaava | EN 2.4668 tai vastaava |
Esimerkkejä liitoksista | ||||
Yleiset teräksen käyttökohteet | Haponkestävä terästä vaativat liitokset (ei klooria/happoja) | Yleiset merivedenkestävää materiaalia vaativat liitokset, pumput; klooriympäristöt; lämmönvaihtimet; ydinvoima;elitarviketeollisuus ja lakintäalan tarvikkeet | Yleiset happoja käyttävät prosessit; Kemikaali teollisuus; haihduttimet; offshore porauslaitteet | Liitokset joissa on korkeat lämpötilat, kaasuturbiinit, turboahtimet, polttolaitokset |
Saatavilla olevat koot | ||||
M3-M130 #5 - 5" |
M3-M80 #5 - 3 1/8" |
M3-M39 #5 - 1 1/2" |
M3-M39 saatavilla tilausten perusteella #5 - 1 1/2" saatavilla tilausten perusteella |
M3-M39 saatavilla tilausten perusteella #5 - 1 1/2" saatavilla tilausten perusteella |
Laatan tyyppi | ||||
Normaali halkaisija (NL3 - NL130) Suurempi ulkohalkaisija (NL3,5sp - NL36sp) |
Normaali halkaisija (NL3ss - NL80ss) Suurempi ulkohalkaisija (NL3,5spss - NL30spss) |
Normaali halkaisija (NL3ss-254 - NL39ss-254) Suurempi ulkohalkaisija (NL3,5spss-254 - NL27spss-254) |
Normaali halkaisija (NL3ss-276 - NL39ss-276) Suurempi ulkohalkaisija (NL3,5spss-276 - NL27spss-276) |
Normaali halkaisija (NL3ss-718 - NL39ss-718) Suurempi ulkohalkaisija (NL3,5spss-718 - NL27spss-718) |
Käsittely/pinnoitus | ||||
Läpikarkaistu Delta Protekt® pinnoite (KL100) ja kitkanhallintapinnoite (VH302GZ) | Pintakarkaistu | Pintakarkaistu | Pintakarkaistu | Pintakarkaistu |
Laattojen kovuus* | ||||
≥ 465HV1 | ≥ 520HV0,05 | ≥ 600HV0,05 | ≥ 520HV0,05 | ≥ 620HV0,05 |
Korroosionkesto | ||||
Vähintään 1,000 tuntia suolasumukoe (ISO9227) | PREN 27** | PREN 45** | PREN 68** | PREN 29** |
Ruuvin lujuusluokat | ||||
12.9 asti | A4-80 asti | |||
Lämpötila-alue*** | ||||
-50°C - 200°C | -160°C - 500°C | -160°C - 500°C | -160°C - 500°C | -160°C - 700°C |
* Jotta voidaan olla varma Nord-Lock laattojen toiminnasta on vastinpintojen kovuus oltava pienempi kuin Nord-Lock laattojen pintakovuus (ks taulukko yllä) jhalutessasi muuntaa eri kovuuksia katso Laattojen kovuus sivulta muunnostalukko
** PREN (Pitting Resistance Equivalent Number) = %Cr + 3,3x%Mo + 16x%N. taulukon luvut pätevät perusmateriaalille.
*** Lämpötila suositukset perustuvat materiaalitoimittajan suosituksiin. Alueen sisällä lämpötila ei vaikuta lukituksen toimintaan.
Aluslevyn kovuus
Nord-Lockin aluslevyjen ainutlaatuisen kiilalukitustoiminnon varmistamiseksi kosketuspintojen kovuuus ei saa ylittää Nord-Lockin aluslevyjen kovuutta.
Aluslevyn tyyppi | Alue | Sinkkipinnoitettu flZnnc – 600 | Pinnoittamaton |
Teräksisest aluslevyt (Läpikarkaistu) | NL3 - NL42 NL45 - NL130 |
≥ 465 HV1 ≥ 465 HV1 |
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Ruostumattomasta teräksestä valmistetut aluslevyt (Pintakarkaistu) | NL3ss - NL80ss | ≥ 520 HV0.05 | |
SMO 254® aluslevyt | NL3ss-254 - NL80ss-254 | ≥ 600 HV0.05 |
Kovuus muuntotaulukko
Vickers HV |
Brinell HB |
Rockwell HRC |
Rockwell HRA |
8.8 | 10.9 | 12.9 |
300 | 285 | 29,8 | 65,5 | | | ||
310 | 295 | 31,0 | 65,8 | | | ||
320 | 304 | 32,2 | 66,4 | | | 320 HV | |
330 | 314 | 33,3 | 67,0 | | | | | |
335 | 319 | 33,9 | 67,3 | 335 HV | | | |
340 | 325 | 34,4 | 67,6 | | | ||
350 | 333 | 35,5 | 68,1 | | | ||
360 | 342 | 36,6 | 68,7 | | | ||
370 | 352 | 37,7 | 69,2 | | | ||
380 | 361 | 38,8 | 69,8 | 380 HV | ||
385 | 366 | 39,3 | 70,1 | 385 HV | ||
390 | 371 | 39,8 | 70,3 | | | ||
400 | 380 | 40,8 | 70,8 | | | ||
410 | 390 | 41,8 | 71,4 | | | ||
420 | 399 | 42,7 | 71,8 | | | ||
430 | 409 | 43,6 | 72,3 | | | ||
435 | 414 | 44,1 | 72,5 | 435 HV | ||
440 | 418 | 44,5 | 72,8 | |||
460 | 437 | 46,1 | 73,6 | |||
480 | (456) | 47,7 | 74,5 | |||
500 | (475) | 49,1 | 75,3 | |||
520 | (494) | 50,5 | 76,1 | |||
540 | (513) | 51,7 | 76,7 |