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How to know if steel bar is not substandard?

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rosy
 rosy
(@rosy)
Posts: 4307
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For all I know, its not in the summer time for there are lots of construction going on
during this time. Why not get some feed backs from different hardware stores, ask
around so you will be informed specially during this time of rainy season. πŸ™‚

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Posted : 29/08/2017 10:52 pm
siradri11
(@siradri11)
Posts: 15
Active Member
 

Actually sir, steel philippines has different kinds and to know if its substandard, you have to know first what type of steel are you going for and for what application. To give you a quick summary:

Types of steel:
Stainless Steels - These typically contain anywhere between 10 to 20 percent chromium as the primary alloy element. These steels are utilized for their incredibly high corrosion resistance rates. Stainless steels can further be divided into: Austenitic steel (non-magnetic, non-heat-treatable), Ferritic steel (strengthened by cold working), Martensitic steel (11 to 17 percent chromium, which are typically used as knives and cutting tools)

Carbon Steels - Carbon steels compose 90 percent of the world’s total steel production. Carbon steel can further be grouped depending on their carbon content: Low Carbon Steel (Mild steel, 0.3 percent carbon), Medium Carbon Steel (0.3 to 0.6 percent carbon), and High Carbon Steel (more than o.6 percent carbon).

Alloy Steels - For this type of steel, the common alloying elements include: silicon, nickel, titanium, manganese, copper, aluminum, and chromium. These elements vary in terms of proportion in order to adjust the finalized properties of the steel (corrosion resistance, strength, weld ability, ductility, etc.). Alloy steels are commonly applied for auto parts, power generators, motors, pipelines, etc.

Tool Steels - These steels have quantified variations of tungsten, molybdenum, vanadium, and cobaltin order to increase durability and heat toleranceβ€”ideal for drilling and cutting products. Tool steels can be identified as: Tubular Products (bars, rails, pipes, etc.), Flat Products (plates, sheets, strips), and Other Products (several fittings, valves, flanges, etc.).

 
Posted : 28/06/2018 11:38 am
rosy
 rosy
(@rosy)
Posts: 4307
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Thanks for sharing and great info siradri11 !! :chopper:

CIGWELD Weldskill 250 amp Mig Welder
AHP Alpha-TIG 200X welder
HITRONIC 300 Amp DC Inverter IGBT Welder
YAMATO 300 amp AC Stick Welder
YAMATO 200 amp DC Inverter IGBT Welder
DeWALT Chopsaw
HOBART and ESAB Welding Helmets
cloned STIHLs
MS 044 chainsaw
MS 070 chainsaw

 
Posted : 28/06/2018 1:00 pm
(@bugadenk)
Posts: 19
Active Member
 

Hi guys, if the plan of a column calls for 4 pcs16mm rebars of grade 60, is making it 6 pcs 16mm at grade 33 of equal strength? My contractor tells me that only grade 33 is available at hardwares.

 
Posted : 06/08/2018 2:56 pm
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