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GENERAL TOLERANCE AND PERFORMANCE

You are here: Home1 / PRODUCTS AND SERVICES2 / STAINLESS STEEL TUBES3 / PRODUCT PORTFOLIO4 / GENERAL TOLERANCE AND PERFORMANCE

STAINLESS STEEL TUBES

GENERAL TOLERANCES AND PERFORMANCES
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GENERAL TOLERANCES AND PERFORMANCES

GENERAL TOLLERANCES

DIMENSIONAL TOLERANCES FOR ROUND COMMERCIAL-LENGTH TUBES
GUARANTEED VALUES TYPICAL VALUES NOTES
Thickness +/- 10% with min ± 0,2 +1 / – 7%
Diameter +/- 0,75% with ± 0,3 + 0,10 / – 0,20 mm
Length – 0 / + 50 mm – 0 / + 50 mm
Internal bead – 0 / +10% max 0,20 mm max 0,10 mm
Linearity 2,0 mm/m 1,0 mm/m
DIMENSIONAL TOLERANCES FOR FIX-LENGTH TUBES
GUARANTEED VALUES TYPICAL VALUES NOTES
Length – 0 / + 1 mm 0,50 mm upon request +/- 0,5 mm
Ovality on the cut 0,60 mm 0,30 – 0,40 mm Dmax – Dmin

(*) at 1 D from cut end

DIMENSIONAL TOLERANCES ORNAMENTAL TUBES
Thickness ± 10%
Dimensions base and height ± 0,50 %
Length – 0 + 50 mm
Thickness of the weld bead – 0 / +10% of the thickness; max 0,20 mm
Linearity ≤ 2,0 mm per meter
Torsion ≤ 2,0 mm for the first meter then 0,5 mm for the following
Radius of the corners 1,2 x T +/- 20% (thickness ≤ 2,0 mm)
2,0 x T +/- 20% (thickness > 2,0 mm)
Burr max 1,0 mm per thickness ≥ 2,5 mm
max 0,2 mm per thickness < 2,5 mm

T = Thickness

PERFORMANCES

Ferritic grades

MECHANICAL PROPERTIES OF THE TUBES
REFERENCE NORMS GUARANTEED TYPICAL
AISI 409
LIW 1.4512
Rp02 (MPa) > 210 > 205 330
Rm (MPa) > 380 400÷500 420
A5 (%) > 25 > 30 36÷38
AISI 441
W 1.4509
AISI 439
W 1.4510 etal.
Rp02 (MPa) > 230 > 300 380
Rm (MPa) > 420 > 450 490
A5 (%) > 20 > 28 32÷34
W 1.4003 Rp02 (MPa) > 280 > 300 350
Rm (MPa) > 450 > 450 480
A5 (%) > 20 > 20 22
TECHNOLOGICAL TEST ON THE EXHAUST SYSTEM TUBE AISI 409 LI / W 1.4512
REFERENCE NORMS GUARANTEED TYPICAL
Flattening test 2xT + 16 mm 2xT + 16 mm 2xT
Cone expansion 30% 30% 30%
Radial expansion – 20% 30%

T = Thickness

Austenitic grades

MECHANICAL PROPERTIES OF THE ROUND TUBES
REFERENCE NORMS GUARANTEED TYPICAL
Rp02 (MPa) > 200 > 300 400
Rm (MPa) > 500 > 550 600
A5 (%) > 40 > 40 50÷55
Hv 5 < 220 < 220 < 220
TECHNOLOGICAL TEST ON THE TUBES
REFERENCE NORMS GUARANTEED TYPICAL
Flattening test 2xT + 16 mm 2xT 2xT
Cone expansion 40% 40% 50%
Radial expansion – 30% 33 – 35%

T = Thickness

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        • DATA SHEET
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      • VIVINOX® CONTACTS
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      • Back
      • PRODUCT PORTFOLIO
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        • ORNAMENTAL AND DECORATIVE TUBES
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        • INDUSTRIAL TUBES
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