321 stainless steel 8*0.75mm coiled tubing
| Australia | AS 2837-1986-321 |
| Germany | W.Nr 1.4541 X6CrNiTi18 10 |
| Great Britain | BS970 Part 3 1991 321S31 BS970 – 1955 EN58B/EN58C |
| Japan | JIS G4303 SuS 321 |
| USA | ASTM A276-98b 321 SAE 30321 AISI 321 UNS S32100 |
321 stainless steel 8*0.75mm coiled tubing
| Chemical Composition | |||||||||||
| Min. % | Max % | ||||||||||
| Carbon | 0 | 0.08 | |||||||||
| Silicon | 0 | 1.00 | |||||||||
| Manganese | 0 | 2.00 | |||||||||
| Nickel | 9.00 | 12.00 | |||||||||
| Chromium | 17.00 | 19.00 | |||||||||
| Titanium | 5 x Carbon | 0.80 | |||||||||
| Phosphorous | 0 | 0.045 | |||||||||
| Sulphur | 0 | 0.03 | |||||||||
| Mechanical Property Requirements – Annealed to ASTM A276-98b 321 | |||||||||||
| Finish | Hot Finish | Cold Finish | |||||||||
| Dia or Thickness mm | All | Up to 12.7 | Over 12.7 | ||||||||
| Temsile Strength Mpa Min. | 515 | 620 | 515 | ||||||||
| Yield Strength Mpa Min. | 205 | 310 | 205 | ||||||||
| Elongation in 50mm % Min. | 40 | 30 | 30 | ||||||||
| Typical Mechanical Properties At Room Temperature – Annealed | |||||||||||
| Finish | Cold Drawn | Other | |||||||||
| Tensile Strength Mpa | 680 | 600 | |||||||||
| Yield Strength Mpa | 500 | 280 | |||||||||
| Elongation in 50mm % | 40 | 55 | |||||||||
| Impact Charpy V J | 180 | ||||||||||
| Hardness | HB | 200 | 165 | ||||||||
| Rc | 15 | ||||||||||
| Elevated Temperature Properties | |||||||||||
| 321 displays good oxidation resistance in continuous service up to 930oC, and in intermittent service up to 870oC.It can also be used within the carbide precipitation range 430oC – 870oC without the risk of intergranular corrosion. Mechanical properties are reduced as temperature increases. 321 stainless steel 8*0.75mm coiled tubing
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| Typical Mechanical Properties – Annealed at Elevated Temperatures | |||||||||||
| Temperature oC | 20 | 430 | 550 | 650 | 760 | 870 | |||||
| Short – Time Tensile Tests | Tensile Strength Mpa | 580 | 425 | 365 | 310 | 205 | 140 | ||||
| Yield Strength Mpa | 240 | 170 | 150 | 135 | 105 | 70 | |||||
| Elongation in 50mm % | 60 | 38 | 35 | 32 | 33 | 40 | |||||
| Creep Tests | Stress for 1% Creep in 10,000 Hours Mpa |
115 | 50 | 14 | |||||||
| Low Temperature Properties | |||||||||||
| 321 has excellent low temperature properties with increased tensile and yield strengths with little loss of toughness in the annealed condition. | |||||||||||
| Typical Mechanical Properties – Annealed at Zero and Sub-Zero Temperatures | |||||||||||
| Temperature oC | 0 | -70 | -130 | -180 | -240 | ||||||
| Tensile Strengt Mpa | 740 | 900 | 1135 | 1350 | 1600 | ||||||
| Yield Strength Mpa | 300 | 340 | 370 | 400 | 450 | ||||||
| Elongation in 50mm % | 57 | 55 | 50 | 45 | 35 | ||||||
| Impact Charpy J | 190 | 190 | 186 | 186 | 150 | ||||||
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