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inchak at tatasteel.com Guest
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Posted: Wed Jul 20, 2005 6:48 am Post subject: Message No 75 - Guaranteed min & Max strength of rebar |
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Dear Mr Mukesh Upadhyay You Asked" "what were the ultimate strengths of those samples which you tested"
The data analysed for 255 market samples show the following trend of UTS/YS Ratio - from which Average approximate UTS can be easily calculated. The actual data however shows a lot of scatter. YS Level(MPa) 400 UTS/YS Ratio - 1.29 YS Level(MPa) 500 UTS/YS Ratio - 1.21 YS Level(MPa) 600 UTS/YS Ratio - 1.13 YS Level(MPa) 700 UTS/YS Ratio - 1.06
The above data does not hold for Super Ductile Rebars which are metallurgically different. for these Super Ductile Rebars some typical data are:
28mm- YS (Mpa) 458 UTS (Mpa) 585 UTS/YS Ratio 1.28 25mm- YS (Mpa) 473 UTS (Mpa) 601 UTS/YS Ratio 1.27 12mm- YS (Mpa) 449 UTS (Mpa) 579 UTS/YS Ratio 1.29 12mm- YS (Mpa) 429 UTS (Mpa) 591 UTS/YS Ratio 1.38
I will be keen to know if it satisfies the need. Regards Indranil Chakrabarti
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