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Minimum versus recommended inside bend radius - The …

Next, subtract 1 from that answer 5 – 1 = 4. Now, multiply that answer by the plate thickness. If the material is 0.5 inch thick 4 × 0.5 = 2. So in this case, the minimum inside bend radius is 2 times the material thickness.” If I am looking at properties for A36 steel, I see elongation properties between 18 …

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Bent Plates and Minimum Bend Radius - Structural ...

Oct 24, 2005 · 19 Oct 05 18:45. I don't understand the "minium bend radius" concept. In the ASD, page 4-174, a 1/2 in A36 plate has a minimum bend radius of 1.5 X thickness.

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 FAQ731-376Minimum Flat Plate ThicknessMar 21, 2013How tight can I bend A36 3/4" Plate?Apr 19, 2010See more results

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a36 steel bend radius PDF -- Shanghai Katalor

ASTM A36 Mild/Low Carbon Steel. ... thus enabling ASTM A36 to bend more readily than C1018. ... rheomboidity, bending , twisting, corner radius, ... Bending (metalworking) - Wikipedia The bending radius must be at least 0.8 T to 2 T for sheet steel.

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a36 steel bend radius steel plate -- Shanghai Katalor

a36 steel bend radius steel plate specification can be offered by KATALOR ,we are professional a36 steel bend radius steel plate suppliers and manufacturer in China, if you need a36 steel bend radius steel plate price and application ,please contact us.

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PRODUCT GUIDES - Central Steel and Wire Company …

The same inside bend radius cannot be used for all steel grades. There are inside bend radius recommendations listed for some of the steel grades that we stock. They are shown in relation to the material thickness. For example, using a ¼” steel plate, an IBR recommendation of 1.5T would equal an inside bend radius of 3/8” (.250 x 1.5 = .375)

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Can anyone recommend information on the minimum bend …

[email protected] Forum. ASTM A36 [1] steel has an elongation at break of 21% for 3/16" plate. You want to make sure that the elongation in you bend does not exceed this number otherwise you will get failure. For the 3/4" part the minimum radius would be approximately 3.6" and fro the 1" angle the minimum radius would be approximately 4 3/4".

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ASTM A36 steel - steel-grades

ASTM A36, >8 to 15 in. thick, as-rolled steel plate Categories Metal; Ferrous Metal; ASTM Steel; Carbon Steel; Low Carbon steel Material Notes A popular "workhorse" grade, it is used widely for various applications.

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Equivalent length of a BAR of any section after bending ...

When working with A36 steel, I figure the bend allowance to be one third of the material thickness plus the radius of the bend x 1.507 for a 90 degree bend or Bend allowance for one degree of bend =(1/3T + R) X 1.507 / 90 where T = material thickness and R equals the bend radius.

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Minimum Recommended Bend Radius Chart from American ...

Minimum Recommended Bend Radius Chart for Aluminum and Stainless Steel from American Machine Tools Company. ... 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 if manufacturing for aircraft and aerospace applications. ... THICKNESS OF ...

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SheetMetal.Me – K-Factor

Calculating The K-Factor

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Macksteel Warehouse, Inc.

Recommended Fabricating Practices for Cold Forming. (Bend axis perpendicular to rolling direction “across the grain”)* Suggested inside Radii for 90deg bends for thicknesses expressed in terms of “t” where t = mat. thickness. Steel A36 – 36,000 psi Minimum Yield Strength. Thru .250” 1t …

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Steel Plate Rolling and Bending of Higher Strength Steels ...

When performing steel plate rolling and bending of higher strength steels, you will have two main considerations 1. ... Most bending and rolling machines are rated using a “standard” of mild steel A36 or 1018 with yield strength around 36,000 psi. ... Minimum Bending Radius When Bending Bars of Steel ;

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Steel Plate Rolling and Bending of Higher Strength Steels ...

Steel Plate Rolling and Bending of Higher Strength Steels. The larger the forming radius, the more the spring back angle For example, when you bend ¼” plate to a ¼” radius 90 degrees, A36 will springback is only 0.25 degrees. Gr50 will springback still is only 0.35 degrees. But if the radius is larger, say 2”, then A36 will springback 2.58 degrees. Gr50 will springback 3.58 degrees.

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Minimum Recommended Bend Radius Chart from American ...

Minimum Recommended Bend Radius Chart for Aluminum and Stainless Steel from American Machine Tools Company. ... 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 if manufacturing for aircraft and aerospace applications. ... THICKNESS OF ...

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SheetMetal.Me – K-Factor

Calculating the K-Factor. To do this first determine your leg length by subtracting the material thickness and inside radius from the flange length. (Note this equation only works for 90° bends because the leg length is from the tangent point.) For our example the leg length will be 2.073 – .105 – .075 = 1.893.

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Can anyone recommend information on the minimum bend …

[email protected] Forum. ASTM A36 [1] steel has an elongation at break of 21% for 3/16" plate. You want to make sure that the elongation in you bend does not exceed this number otherwise you will get failure. For the 3/4" part the minimum radius would be approximately 3.6" and fro the 1" angle the minimum radius would be approximately 4 3/4".

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Equivalent length of a BAR of any section after bending ...

When working with A36 steel, I figure the bend allowance to be one third of the material thickness plus the radius of the bend x 1.507 for a 90 degree bend or Bend allowance for one degree of bend =(1/3T + R) X 1.507 / 90 where T = material thickness and R equals the bend radius. As you bend the material, it …

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BENDING PROFILES PLATE - Albina Co., Inc.

STEEL BENDING. Accurate & Repeatable Parts. SPECIALTY BENDING. Difficult & Unusual Parts. MATERIAL SIZES. ... length and/or thickness. ... The most common plate is "universal mill plate" which is designated as A36 material with a yield point (PSI) of 36,000 minimum. ...

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Break Press or Bending A36 Carbon Structural Steel Plate

Jun 09, 2011 · The issue if cold forming or bending via a break press. We are attempting to bend .188” A36 material to an inside radius of 1.5 times material thickness. Many suppliers tell me that they can do it.

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Solved An A-36 Steel Strip Has An Allowable Bending Stres ...

Show transcribed image text An A-36 steel strip has an allowable bending stress of 165 MPa The modulus of elasticity for A-36 steel is 200 GPa. (Figure 1) If it is rolled up, determine the smallest radius r of the spool if the strip has a width of 14.5 mm and a thickness of 1.5 mm.

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ASTM A36 Structural Steel Angle Section Properties …

ASTM A36 angle is one of the most widely used carbon steels in industry. A36 steel it is weldable, formable, and machinable. Galvanizing the steel increases its corrosion-resistance. The following chart table gives cross section engineering data for ASTM Structural Steel Angle as follows Weight per foot.

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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.

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Useful Fabrication Information Bending

Useful Fabrication Information Bending. ... Steel ductility can be reduced significantly by the presence of local stress raising influences. For this ... Minimum Bend Radius (mm) Strip Thickness (mm) Table1 Recommended Minimum Inside Radius for Cold Bending of Plate Grades During Fabrication (1)

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Bending Basics The fundamentals of heavy bending

The minimum radius also increases with harder material. For 0.25-in.-thick 6061 in a “T4” condition, the material supplier may specify the minimum radius to be 3 times the thickness; 0.375-in.-thick plate may have a minimum radius of 3.5 times the thickness; for 0.5-in.-thick plate it can be 4 times the thickness.

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Angles AZCO Steel Company

Structural Angles Angles having leg dimensions greater than 3”. AZCO Steel Stocks Structural Angle From 3” x 2” x 3/16” Up To 8” x 8” x 1-1/8” Bar and Structural Angle Iron – Leg Thickness Tolerances Bar and Structural Angle Iron – Leg Length Tolerances Galvanized Angles are available in ASTM A123.

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A36 steel - Wikipedia

A36 steel in plates, bars, and shapes with a thickness of less than 8 in (203 mm) has a minimum yield strength of 36,000 psi (250 MPa) and ultimate tensile strength of 58,000–80,000 psi (400–550 MPa). Plates thicker than 8 in have a 32,000 psi (220 MPa) yield strength and the same ultimate tensile strength of 58,000–80,000 psi (400–550 MPa).

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