Excellent Mechinical Property Cold Rolled Steel Coil

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Product Description:

Specification

1. Thickness: 0.4-2.0mm

2. Width: 900-1250mm

3. Inner Diameter: 508 & 610mm

4. Weight of Steel Coil: 3-15MT

5. Heat Treatment: Annealed + Smoothed

6. Margin Status: EC & EM

7. Surface Quality: FC & FD

8. Surface Treatment: Oiling

9. Surface Status: Bright


Chemical Components

Grade

Chemical Components

C

Mn

P

S

Alt

St12

≤0.10

≤0.50

≤0.035

≤0.025

≥0.020

St13

≤0.08

≤0.45

≤0.030

≤0.025

≥0.020

St14

≤0.08

≤0.40

≤0.025

≤0.020

≥0.020


Mechanical Properties

1. Yield Strength: ≤320MPa

2. Tensile Strength: ≤370MPa

3. Elongation (L=50mm, b=25mm) When:

(1) Nominal Thickness <0.25mm: 30%

(2) Nominal Thickness 0.25mm-<0.40: 32%

(3) Nominal Thickness 0.40-<0.60mm: 34%

(4) Nominal Thickness 0.60-<1.0mm: 36%

(5) Nominal Thickness 1.0-<1.6mm: 37%

(6) Nominal Thickness >1.6mm: 38%




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Q:opinions on steel vs synthetic cable?
Steel is more dangerous, both in a fatal metal whip way and a metal splinters in my hand way. Steel weighs more. So why would anyone continue to use steel? Cost and care. Care: Steel can sit for years without having to worry about dry rot (as long as it's not out in too horrible of weather conditions). Steel is much more resistant to fraying. You don't have to baby steel so much to keep it in good conditions. Cost: As of right now, steel is less than half the cost of synthetic. A synthetic rope can cost as much as many electric winches which include a steel cable. I find that I don't use my winch nearly enough to warrent the extra care or cost of a synthetic. The weight savings would be nice, but I kind of ruined that a long time ago with the winch bumper, rock sliders, plate steel fenders/flares, belly armor and frame plating.
Q:Shaft stiffness in steel irons???
If i understand you correctly, i think you misunderstand shafts. Steel shafts vs. graphite shafts these days is more of a competition of weights, not flexibility. Both steel and Graphite have different flex profiles available from Ladies (L) to super stiff (X). Graphite may feel a little more whippy than steel because of the lighter weight. Shafts will vary by company as well. Stiff from True temper may not be as stiff as one from Aldila, or vice verse. You can also make a shaft play stiffer or more flexible by where you cut the length. This is called tipping. Take more from the bottom and it will be stiffer, more from the grip end and it will play more flexible.
Q:How did the planes break the steel?
1 nothing is unbreakable! 2 it is a question of velocity not that the plane was going very fast but! the difference between an explosion and a detonation is if the flame front is faster or slower than 1000 meter per second If you burn Hydrogen it burns fast, more than 1000 meter per second at that speed a plastic pen like those you use every day will puncture through a steel 2X4 used in modern building walls it is not thick steel but it is still steel! and the plastic piece is hardly deformed Those talking about aviation fuel... this is long, very long after the fact Guru
Q:WHAT IS CR-NI STEEL ?
chromium nickle steel aka stainless steel exact amount of chrome and nickle will determine type/grade numbers Check the google for steel type/grade Never head of aircraft grade, however,, there is marine grade - normally baltic birch with waterproof glue and no defects i.e. knots, etc. Very strong (also quite expensive) but worth it for the correct applications
Q:Probability of steel hardness?
Suppose that the hardness of steel is uniformly distributed, taking on values between 50 and 80 on the Rockwell B scale. That would be... f(x) = 1/(80 - 50), 50 ≤ x ≤ 80 . . . . . 0 elsewhere Consider this following problem.. Compute the probability that the hardness of a randomly selected steel specimen is less than 60. Here, we have... P(x 60) Oh! Know that the mean and the standard deviation of the uniform distribution function are... µ = (a + b)/2 σ = (a - b)²/12 You should get... µ = 65 σ = 75 Now... P(z (60 - 65)/75) = P(z -0.07) Hence, you should get around 0.462. Good luck!
Q:Is Grade A Surgical Steel...?
Perfect! 3
Q:steel or aluminum horse trailer?
I bought a steel trailer. It was much heavier than the aluminum, as you said. But really, they are equivalents. As long as you have enough power to haul the trailer, you can use steel. We never had a rust problem with ours. In PA you do pay sales tax on horse trailers, stock trailers, etc. I forget about the plates, though. It's been a few years since we got our trailer. I would assume they would give you something to get the trailer home with though.
Q:What were some steel advances in industries? 10 points!?
The single most important important advance in steel production was learning to accurately control carbon content. This was done through the Bessemer Process in which air was blown through molten iron to burn out impurities and excess carbon. Low carbon iron (wrought iron) could be easily worked into shapes. Medium carbon iron could be cast into useful and durable shapes. High carbon steel could be used for structural uses (beams and girders). Adding alloys such as nickel and silicon could produce very tough steels and steels resistant to rust. Adding vanadium to steel engine parts allowed Ford to produce finely machined engines in huge numbers with existing machinery.
Q:Why was there molten steel at Ground Zero?
that's just it: there wasn't very much molten steel for the very reason you point out. Jet fuel burns at 800° to 1500°F. This is not hot enough to melt structural steel. However, engineers say that for the World Trade Center towers to collapse, their steel frames didn't need to melt, they just had to lose some of their structural strength. Steel will lose about half its strength at 1,200 degrees F. The steel will also become distorted when heat is not a uniform temperature. after the collapse, a LOT of folks took a look at the remains. the result was the conclusion that the fire caused the central core of the building to weaken. When the floors collapsed one on top of the other, the weight was too much for the weaked core to bear, causing the result we are all familiar with. hope this helps
Q:What is the difference between steel and fiberglass entry doors?
Steel doors can dent easily and are usually cheaper in price. Whereas fiberglass doors cost more but are more durable to withstand weather etc. Steel doors show the effects of wear and tear more than wood or fiberglass doors do.

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