WINTER 2021
Distributor's Link Magazine Fall 2020 / Vol 44 No 1 Distributor's Link Magazine Fall 2020 / Vol 44 No 1
106 THE DISTRIBUTOR’S LINK GUY AVELLON WHAT FASTENER DISTRIBUTORS NEED TO KNOW ABOUT HIGH TEMPERATURE BOLTING from page 24 The F2281 does not reference strain hardening but instead references all annealed or solution-annealed stock with re-annealing the product within specific heat ranges for different Types and Classes. What is unique with this standard is that the tensile and yield strengths are consistent for all diameters in each Class with the exception of the alloys 410, 416 and 431. There are three types of material specifications; Type I for heat resisting alloys for continuous service applications; Type II for heat resisting alloys for continuous and intermittent service applications; Type III for high temperature alloys for continuous and intermittent service applications. There are also three Classes of alloy Grades; Class A, for heat resisting austenitic grades; Class B, for heat resisting martensitic grades; and Class C for heat resisting ferritic grades. For example, to designate austenitic alloys, all product markings will have an F1, followed by a letter from A (F1A) through M (F1M). The austenitic alloys are Type I; Class A are 304, 304L, 316 and 316L. The 304 and 304L alloys are the most susceptible of the austenitic stainless steels to stress corrosion cracking (SCC). The ‘L’ suffix indicates low carbon, such as 0.03% for 304L vs 0.08% for 304. Exposure to halides, chloride ions as well as elevated temperatures will promote SCC due to their lower nickel content, which is why the proper solution-annealing and re-annealing processes are very important as is a slow cooling rate to prevent carbide precipitation. The 316L has better resistance to intergranular stress corrosion but continuous operating temperatures from 800-1500ºF (427-816ºC) will cause chromium carbide precipitation in the grain boundaries weakening the fastener. However, these Class A heat resisting alloys are recommended as safe scaling for continuous service temperature at 1600°F (871°C) Because of the relatively low carbon content of the austenitic series, they may not be hardened by heat treatment but the martensitic and ferritic series may be hardened because of their higher carbon content and lack of nickel. The martensitic steel is a bodycentered tetragonal (BCT) crystal and the ferritic steel is a body-centered-cubic (BCC) crystal structure: both are ferromagnetic and hardenable. The ferritic steels are more resistant to SCC but more susceptible to pitting and crevice corrosion. The martensitic alloys of 410, 416 and 431 are of the Type I, Class B grades. The 410/416 alloys are recommended for continuous service temperature of 1200° (649°C) while the 431 alloy is recommended for continuous service at 1300°F (704°C). The ferritic alloys of 430 and 430F are of the Type I Class C grades and have a safe scaling temperature at continuous service of 1500°F (816°C). Type II, Class A heat resisting austenitic alloys for continuous and intermittent service include; 309, 310, 321, 330 and 347. Type II grades are designated with an F2 followed with a letter suffix of A through I. (F2A- F2I) Type III, Class A for high temperature nickel alloys for continuous and intermittent service includes alloy 600, for temperatures of 1800°F (980°C) and 601, for temperatures of 2000°F (1095°C). Type III grades are designated with an F3 followed by a letter suffix of A through G. (F3A-F3C) Type III, Class B is for high temperature, precipitation hardened alloy 660, (F3D-F3F), which has high strength and corrosion resistance up to 1300°F (704°C). Type III, Class C is for high temperature, precipitation hardened alloy 718. (F3G). It should be noted that while the tensile strengths of these high temperature alloys are high, their tensile strengths and yield strengths begin to decrease significantly once the operating temperature is elevated beyond 1100º F (594º C). For example, the Type III, Class B alloy (660) has a tensile strength of 138 ksi (952 MPa) at 800º F (427º C) but drops to 64 ksi (441 MPa) at 1400º F (760º C). The Class C alloy grade 718 retains its strength properties at a slightly higher strength and temperature level, such as 124 ksi tensile strength at 1400°F (760°C). When making and using torque values, always check the specification and diameter requirements for any changes in the yield strength. The tensile strengths may be the same for some, but the yield strength may have changed which will significantly affect the connection. Then check the operating temperatures for the proper choice of alloy and condition. GUY AVELLON
THE DISTRIBUTOR’S LINK 107 METROPOLITAN FASTENER DISTRIBUTORS ASSOCIATION PO Box 72, Lake Zurich, IL 60047 TEL 201-254-7784 FAX 847-516-6728 EMAIL admin@mfda.us WEB www.mfda.us TOYRAISING IN THE TIME OF COVID by Rob Rundle For the last 22 years, the Metropolitan Fastener Distributors Association has partnered with Golf Company of the 2nd Battalion, 25th Marine Regiment in Dover New Jersey to help raise toys and money for the Toys for Tot’s Drive. The MFDA’s annual dinner, always held the first week in December, kicked off the Holiday season for the Association and allowed its members to gather to celebrate the season. While at the same time honoring the Marines who would join the evening. As with seemingly everything else, the Covid epidemic changed how the Association handled the drive for 2020. “It was pretty clear by the time of our planning meeting that the dinner itself wasn’t going to work, so the question became how do we still support the Marines, especially when there the need for toys in this area is higher than ever?” said Rob Rundle, Co-Chair of the drive, “the board and the membership really came through”. Instead of an in-person event where people could drop off toys, individual members bought toys and sent them to Brighton-Best in Sayerville NJ and Star Stainless Corp in Totowa NJ who volunteered to serve as staging locations. Companies that traditionally ASSOCIATION ARTICLE had toy drives and would bring everything to the dinner still had them, but an MFDA board member picked them up and brought them to Picatinny Arsenal, where Golf Company is based. The Association also upgraded its website so it could accept donations online. “That was a game changer for us” said Rundle, “we didn’t have to enter anyone’s information and instead it just gets swept from PayPal into the checking account”. The monetary donations are as important to the Marines as the toys because with the money, the Corps can purchase toys for groups like small children and teenagers who typically don’t get a lot of toys donated to them. Final donations numbers weren’t available at press time, but the MFDA was on track to exceed last year’s record. The MFDA’s efforts for the last two decades had them recognized as a National Corporate Donor by the Toys For Tots Foundation in Washington DC. While it’s a large effort for the association, it’s a fraction of Golf Company’s yearly efforts. In a typical year, the men and women of Golf Company collects, sorts, and donates over 100,000 toys to the youth of the Northern New Jersey area. METROPOLITAN FASTENER DISTRIBUTORS ASSOCIATION
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THE DISTRIBUTOR’S LINK 107<br />
METROPOLITAN FASTENER DISTRIBUTORS ASSOCIATION<br />
PO Box 72, Lake Zurich, IL 60047 TEL 201-254-7784 FAX 847-516-6728 EMAIL admin@mfda.us WEB www.mfda.us<br />
TOYRAISING IN THE TIME OF COVID by Rob Rundle<br />
For the last 22 years, the Metropolitan Fastener<br />
Distributors Association has partnered with Golf Company<br />
of the 2nd Battalion, 25th Marine Regiment in Dover New<br />
Jersey to help raise toys and money for the Toys for Tot’s<br />
Drive. The MFDA’s annual dinner, always held the first<br />
week in December, kicked off the Holiday season for the<br />
Association and allowed its members to gather to celebrate<br />
the season. While at the same time honoring the Marines<br />
who would join the evening.<br />
As with seemingly everything else, the Covid epidemic<br />
changed how the Association handled the drive for 2020. “It<br />
was pretty clear by the time of our planning meeting that the<br />
dinner itself wasn’t going to work, so the question became<br />
how do we still support the Marines, especially when there<br />
the need for toys in this area is higher than ever?” said<br />
Rob Rundle, Co-Chair of the drive, “the board and the<br />
membership really came through”. Instead of an in-person<br />
event where people could drop off toys, individual members<br />
bought toys and sent them to Brighton-Best in Sayerville<br />
NJ and Star Stainless Corp in Totowa NJ who volunteered<br />
to serve as staging locations. Companies that traditionally<br />
ASSOCIATION ARTICLE<br />
had toy drives and would bring everything to the dinner still<br />
had them, but an MFDA board member picked them up and<br />
brought them to Picatinny Arsenal, where Golf Company is<br />
based.<br />
The Association also upgraded its website so it could<br />
accept donations online. “That was a game changer for us”<br />
said Rundle, “we didn’t have to enter anyone’s information<br />
and instead it just gets swept from PayPal into the checking<br />
account”. The monetary donations are as important to the<br />
Marines as the toys because with the money, the Corps can<br />
purchase toys for groups like small children and teenagers<br />
who typically don’t get a lot of toys donated to them. Final<br />
donations numbers weren’t available at press time, but the<br />
MFDA was on track to exceed last year’s record.<br />
The MFDA’s efforts for the last two decades had them<br />
recognized as a National Corporate Donor by the Toys<br />
For Tots Foundation in Washington DC. While it’s a large<br />
effort for the association, it’s a fraction of Golf Company’s<br />
yearly efforts. In a typical year, the men and women of Golf<br />
Company collects, sorts, and donates over 100,000 toys to<br />
the youth of the Northern New Jersey area.<br />
METROPOLITAN FASTENER DISTRIBUTORS ASSOCIATION
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