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Mechanical Properties

Minimum versus recommended inside bend radius - The

In steel between 0.5 and 0.8 in. thick, grade 350 and 400 may have a minimum bend radius of 2.5 times the material thickness when transverse bending, while longitudinal bending may require a minimum bend radius that’s 3.75 times the material thickness (see Figure 1).[PDF]

Steel rie ein Hanboo - Federal Highway Administration

steel plate and rolled shape products that are available under the ASTM A709 Specification. This includes both a general introduction to steel making practices and a detailed discussion of mechanical properties.

Bending Basics: The fundamentals of heavy bending - The ...

In steel between 0.5 and 0.8 in. thick, grade 350 and 400 may have a minimum bend radius of 2.5 times the material thickness when transverse bending, while longitudinal bending may require a minimum bend radius that’s 3.75 times the material thickness.

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Plate Roll. Bore Repair Cold Saw. Hydraulic Press. Lathe machine. Plasma Table . Band Saw. Press Brake. Minimum Bend Radii: The minimum bend radius data shown in these charts is measured to the inside of the bend. The bend radii listed are standard minimum

Bent Plates and Minimum Bend Radius - Structural ...

Oct 24, 2005· In the ASD, page 4-174, a 1/2 in A36 plate has a minimum bend radius of 1.5 X thickness. Let's say I'm designing a skewed connection and I need a bent plate, does the minimum bend radius mean I HAVE to bend the plate 1/2 in? Halp! RE: Bent Plates and Minimum Bend Radius MWPC (Structural) 19 Oct 05 18:55.vooter, It is just the radius of the bend. Not the angle or offset. Lets say you bent the plate 90 degrees. Any connection would need to be held back 3/4" from the inside to allow for the bend radius. Kind of like the fillet of an angle or other hot rolled section. Hopes this helps.I work on aircraft structure and not civil type structures. I like to view this site to try to gleam some knowledge from the very experienced folks here. Aluminum in aircraft has minimum bend radius of about 3 to 4 times the thickness (depends on alloy and heat treat). Bend radius is the inside radius after bending. Bending is typically done with a brake that has a tool to form the specified radii. If the sheet is bent to a tighter radius is likely to crack. You can actually bend the sheet to a larger radius to ensure you do not crack the metal. Steel can be bent to a tighter radii. Hope I shed some light on the issue.When bending steel plates, you to bend perpendicular to the grain not parallel. This will mitigate development of cracks in the steel plate. Regards, LutfiYou might ponder that last statement in connection with square and rectangular structural tubing...back to the OP ... 1.5*0.5" = 0.75" i think a big factor in minimum bend radius is the temper (which may be evident in "A36", so excuse my ignorance). if you bend it in the annealled condition (similar to O condition in Aluminium) and then heat treat to the required strength, you may be able to bend more tightly. i guess really you can bend as tightly as you like, so long as you don't get cracks forming (and perform a crack check inspection).If you do the math, the strain corresponding to the allowable AISC and AASHTO bending radii can be well beyond typical rupture strains. Kinda scary. (And yet we don't hear of bent plates fracturing all over the place in service.) Hg Eng-Tips policies: FAQ731-376Thanks for the insights, etc. I did some deep "web mining" for anything to do with bending sheet metal. I first went into my cold-formed steel books but found little (they're about using the fabricated pieces, not about fabricating the actual pieces). Then I started thinking about sheet metal fabrication and such. The best info I found was at massey.ac.nz/~odiegel/bendworks/ . I downloaded their paper "Bending." It gave a formula that related a "bending allowance" to bending radius. It explained everything to me. Basically, that 4 in x 4 in bend plate is going to be a little bit longer than 8 in. Intuitively I'd say "of course," I'd just never given the issue much thought.The bend radius given in the AISC manual is for cold bending. As mentioned earlier, the strain on the outer fiber is going to be large (it has to yield the material anyway) and may be near the accepted rupture limit. I would recommend you consider this when allowing cold bending. If you need tighter radii, specify hot bending. I would recommend hot bending for some situations when cold bending might be allowed by the formula. Good Luck.Specify hot bending? What exactly is the minimum temperature for specified "hot bending"? I've gone looking for it and haven't found it. The closest I got was a metallurgist saying that nothing below the transition temperature could be considered hot bending--but you can't go near that transition temperature and still be sure that you had the same grade of steel you started with. I've taken to calling it "heat-assisted cold bending" instead, not that that really solves anything. The other thing to worry about is bending the steel while it's in the "blue brittle" range (roughly 400-700F), which not only increases the likelihood that the steel will crack during bending but also can leave the steel embrittled afterward. Hg Eng-Tips policies: FAQ731-376[PDF]

PRODUCT GUIDES - Central Steel

Inside Bend Radius During the fabrication of parts made from flat rolled steel products (sheet/plate), some of these parts require the steel to be formed (bent) into

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Useful Fabrication Information Bending

Useful Fabrication Information Bending. ... Minimum Bend Radius (mm) Strip Thickness (mm) Table1 Recommended Minimum Inside Radius for Cold Bending of Plate Grades During Fabrication (1) For most structural applications, the extent of strain hardening and consequent increase in strength with[PDF]

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Sheet Metal Bend Radii If these guidelines are not followed, more research and/or, some form of analysis may be requried. Table 1 Preferred recommended 90 degree bend radii for various sheet metals.

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When performing steel plate rolling and bending of higher strength steels, you will have two main considerations:. 1. The tonnage/capacity of the machine 2. The spring back of the material after pressure is released. The tonnage is fairly linear in proportion with the yield strength.

Minimum bend radius for sheet metal parts - The ...

Dec 31, 2009· It's a function of material type, thickness and the type of bend. Aluminum is less forgiving than cold-rolled steel or stainless steel. For thin gauges (.063" and less), 1/2 the material thickness for simple bends of 90 degrees or less is acceptable.[PDF]

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A complete list of AISI standards update ... (1) where k = Plate buckling coefficient determined in accordance with Specification Sections B2, B3, B4 and B5, as applicable ... R1, R2 = Inside bend radius. See Figure 1 t = Thickness of element. See Figure 1 (c) Section B2.5, Uniformly Compressed Elements Restrained by Intermittent Connections ...

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Bend Allowance Calculator The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length. The bend allowance describes the length of the neutral axis between the bend lines, or in other words, the arc length of the bend.[PDF]

DSM

The inside bend radius that is developed during the air bending process depends on 3 factors: 1) the width of the vee die, 2) the stiffness of the material, and 3) the radius of the upper tool. The wider the vee die, the larger the resulting bend radius. The more ductile (easier to bend) the material, the smaller the resulting bend radius. ...[PDF]

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iv . List of Figures . Figure 1 Relative temperature-time history for plate rolling and heat treating processes. ..... 14 Figure 2 Segregation causes planar inclusions at the

Standard Specification for General Requirements for

1.2 Annex A1 lists permitted variations in dimensions and mass (Note 1) in SI units. The values listed are not exact conversions of the values in Tables 1 to 31 inclusive but

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All dimensions are entered in inches and all outputs will be in inches. All dimensions are to be rounded to .xxx Enter consistent dimensions(i.e. if you enter an inside dimension for one input, enter an inside dimension for your other inputs.[PDF]

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EXERCISE QUESTIONS—INTRODUCTION AND MODULE #1

· Web viewWhat is the minimum preheat and interpass temperature for welding ½ inch thick ASTM A709 Grade 36 steel with an E6013 electrode when the base metal temperature is less than 32°F? ... 1. For RT of 1-1/2 inch thick plate, which hole-type IQI designation is required (Source Side)? ... 1 face bend, 1 root bend. 2 tensiles, 4 side bends. 2 ...[PDF]

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wide flange | Albina Co., Inc. Blog

Albina recently rolled wide flange W8x24# the hardway to a 4 foot inside radius to AESS standards! This is an extremely tight radius to bend to and our operators bent it to perfection! This is an extremely tight radius to bend to and our operators bent it to perfection!

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1.1 This specification covers high-strength low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction but intended primarily for use in welded bridges and buildings where savings in weight or added durability are important.

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DETAILS OF FINGER PLATE EXPANSION DEVICE AT

DETAILS OF FINGER PLATE EXPANSION DEVICE AT INT. BENT NO. (Top & Bott.) 1" max. Thickness = 1/4" min. One full size shim plate Optional: 2‡" Weld (Typ.)

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A high-strength, low-alloy steel plate utilized primarily in structural applications such as bridges and buildings. This grade is designed for projects requiring atmospheric corrosion resistance. Its advantage over A572 50 is its weathering ability.[PDF]

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t = minimum thickness of plate, after forming, of the outer jacket heads may not be less than 1/2 inch and they must be made from steel specified in § 179.16(c). ... Minimum Recommended Bend Radius Chart from American . ... What would the minimum thickness be for a steel patterning plate, using #8 shot and smaller @ 1200fps from 20yds? We have ...[PDF]

STEEL REPAIR PROCEDURES OPERATIONS MANUAL

This Steel Repair Procedures Operations Manual (module) ... * Base metal that is A709 grade 50W (A588) ‘weathering’ grade material shall employ ... If it is elected to flame cut the connection plate, the cut line shall be 1/8” from the girder web. All remaining weld and connection plate

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Standard Specification for Cold-Formed Electric-Fusion

A709/A709M Specification for Structural Steel for Bridges ... 8.6 Radius of Corners—Corners shall be bent with a bend radius three times the thickness (3t) or greater.6 3 Available from American Welding Society ... TABLE 1 ASTM Plate SpecificationsA Grade 50 [345] A572/A572M, A656/A656M, A709/A709M, A945/A945M ...[PDF]

DETAILS OF FINGER PLATE EXPANSION DEVICE AT

DETAILS OF FINGER PLATE EXPANSION DEVICE AT INT. BENT NO. DETAIL "A" (Top & Bott.) Optional: One full size shim plate Thickness = 1/4" min. 1" max.[PDF]

DETAILS OF FINGER PLATE EXPANSION DEVICE AT END

1/2" Radius ¸ W14 x 43 ¸ Cut at 60°F about 9" cts.) (Spaced alternately at ... Material for the expansion device shall be ASTM A709 at installation. decreased " for each 10° fall or rise in temperature ... Bend Line 1 ‡ " — " BENT PLATE BEVELED CURB AT END OF PART ELEVATION 3" 3"

Corten Flat Sheets | Corten Coil | Tube and Pipe

A588 plate is in stock at 96" widths X 240" or 480" lengths. Custom fabrication is available. Corten Flat Bar Corten flat bar arrives unrusted and will develop a gorgeous patina after exposure to the weather. A588 flat bar is in stock and available for immediate shipment.[PDF]

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2" 1" ` BASE PLATE ANCHOR PLATE 7 " 1A 2 ... all plates, bars, and rectangular sleeves SHALL CONFORM TO ASTM A709 grade 36. all STRUCTURAL TUBING SHALL CONFORM TO ASTM A500 GRADE B. ... BAR 1" X 1" . BEND TO REQUIRED RADIUS. WELD TO NO. 4 & 5. BAR 1" X 1†" PICKETS. WELD TO NO. 11. PLACE VERTICAL.

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(PDF) Cold bending HPS 485W steel bridge girders

Cold Bending HPS 485W Steel Girders The closed form expressions provided for the stress-strain variation from Fig. 2 in the post-yield region (Eqs.1 - 2) based on the power function [12] makes it ...

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thick, as-rolled steel plate Página 1 de 1 Bethlehem Steel ASTM A572 Grade 50 3/16 to 1-1/2 in. thick, as-rolled steel plate (discontinued) ... Rockwell B Tensile Strength @ Break Tensile Strength @ Yield Elongation at Break Bend Radius, Minimum Metric 7.85 g/cc English 0.284 lb/in³ Comments Typical of

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Bethlehem Steel ASTM A572 Grade 50 3/16 to 1-1/2 in. thick, as-rolled steel plate ... Rockwell B Tensile Strength @ Break Tensile Strength @ Yield Elongation at Break Bend Radius, Minimum Metric 7.85 g/cc English 0.284 lb/in³ Comments Typical of ASTM Steel ... ASTM-A709. Uploadé par. José Antonio. GB Standard. Uploadé par. Diana Budi Prasetya.

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Bethlehem Steel ASTM A572 Grade 50 3/16 to 1-1/2 in. thick, as-rolled steel plate ... Rockwell B Tensile Strength @ Break Tensile Strength @ Yield Elongation at Break Bend Radius, Minimum Metric 7.85 g/cc English 0.284 lb/in³ Comments Typical of ASTM Steel ... ASTM-A709. Enviado por. José Antonio. GB Standard. Enviado por. Diana Budi Prasetya ...[DOC]

AN INNOVATIVE TECHNIQUE FOR COLD CURVING

· Web viewBy Antoine N. Gergess1 and Rajan Sen2. Abstract. Cold bending is commonly used for fabricating horizontally curved steel girders. In this method, mechanical loads are used to obtain the required ...[PDF]

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through 2-1/2 inches (64 mm). 4. ... Half of the 1-inch plate was retained as 1-inch plate for subsequent heat-treatment and mechanical-property testing by ATLSS. The other half was ... Weldability Testing Weldability testing was based on the Lehigh Slow-Notch-Bend Test illustrated in Figure 1. The test was modified by adding a second parallel ...

Fatigue of web-flange weld of corrugated web girders: 1 ...

The material used for the corrugated web and flange plates is ASTM A709 grade HPS-70 ... The bend radius R and the corrugation depth H are kept constant as ... (1) In-plane bending and plate bending of the flange plate occur even in a region of constant bending moment.[PDF]

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A36 Steel Channel is a hot rolled, mild steel structural C shape with inside radius corners that is ideal for all structural applications, general fabrication, manufacturing and repairs. Inside Radius Of Angle Iron -

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If you’ve ever asked yourself "why?" about something related to structural steel design or construction, Modern Steel Construction’s monthly Steel Interchange column is for you! Send your questions or comments to solutions@aisc.org.. September 2018[PDF]

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on FHWA CONTRACT No. DTFH61-07-C-00007

through 2-1/2 inches (64 mm). ... Half of the 1-inch plate was retained as 1-inch plate for subsequent heat-treatment and mechanical-property testing by ATLSS. The other half was reheated and rolled to ... Weldability Testing Weldability testing was based on the Lehigh Slow-Notch-Bend Test illustrated in Figure 1. The test was modified by ...[PDF]

-SIGN NOTES (1 OF 2)- - index html

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DETAILS OF FINGER PLATE EXPANSION DEVICE AT

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The strain limit imposed for conventional steel is overly restrictive for HPS 485W since its stress–strain curve has a non-zero hardening stiffness E s t in the yield plateau region ().This makes it possible to maintain control over both loads and deformations in the post-yield region unlike conventional steels.[DOC]

ITEM #1104 A – XX' STEEL MAST ARM ASSEMBLY

· Web viewThe minimum base plate and flange plate thickness shall be 2” (51 mm). The determination of the plate thickness in the tubular member to transverse plate connections shall consider the potential for the plate to warp due to the heat from welding.[DOC]

ITEM #1104 A – XX' STEEL MAST ARM ASSEMBLY

· Web viewMaterials: The structural plate components, such as the baseplate and the plates in the arm to pole ring stiffened, built-up box connection, shall be made of steel that conforms to the requirements, including the supplementary notch toughness requirements, of ASTM A709,

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CHAPTER 1 PROPERTIES OF STRUCTURAL STEELS AND

1.2 CHAPTER ONE A36 steelhas been the principal carbon steel for bridges, buildings, and many other structural uses. This steel provides a minimum yield point of 36 ksi in all structural shapes and in plates up to 8 in thick. In structural steel framing for building construction, A36 steel has been largely replaced

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Standard Specification for Cold-Formed Electric-Fusion

1.2 This tubing is produced in square and rectangular sizes withaperipheryof200in.[500cm]orlessandaspecifiedwall ... TABLE 1 ASTM Plate SpecificationsA Grade 50 [345] A572/A572M, A656/A656M, A709/ ... 8.6 Radius of Corners—Corners shall be bent with a bend radius three times the thickness ...

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