Read ASTM A 269 - 96 text version

ASTM A 269 - 96

Seamless and Welded Austenitic Stainless Steel Tubing for General Service This specification covers nominal wall thickness austenitic stainless steel tubing for general corrosion resisting and low or high temperature service.

Dimensions and Tolerances

· · Dimensions. Tube sizes and wall thickness usually furnished to this specification are: - 1/4 in (6.4 mm) ID and larger. - 0.020 in (0.51 mm) nominal wall thickness and heavier. Cut Length. No tube may be shorter than specified. For tube <11/2 in (38.1 mm) cut length may be up to 1/8 in (3 mm) longer than specified. For tube >11/2 in (38.1 mm) cut range may be up to 3/16 in (4.8 mm) longer than specified. These tolerances are increased by 1/8 in (3 mm) for every 10 ft (3 m) over 24 ft (7.3 m), up to a maximum tolerance of 1/2 in (13 mm).

Cross-sectional tolerances

Outside Diameter (OD) in <1/2

1/2

Wall Thickness (t) in All >0.065 <0.0651 >0.095 mm All >1.6 <1.61 >2.4 in 0.005 0.005 0.005 0.010

Variations in OD Under mm 0.13 0.13 0.13 0.25 in 0.005 0.005 0.005 0.010 Over mm 0.13 0.13 0.13 0.25

Variation in t Under % 15 10 10 10 Over % 15 10 10 10

Ovality2 max in 0.010 0.010 0.020 0.020 mm 0.26 0.26 0.5 0.5

mm <12.7 12.7 to <38.1 12.7 to <38.1 38.1 to <88.9 38.1 to <88.9 88.9 to <139.7 88.9 to <139.7 139.1 to <203.2 139.1 to <203.2 -

to <11/2 to <11/2

1/2

11/2 to <31/2 11/2 to <31/2 31/2 to <51/2 31/2 to <51/2 51/2 to <8 51/2 to <8 -

<0.0951

<2.41

0.010

0.25

0.010

0.25

10

10

0.040

1.0

>0.150

>3.8

0.015

0.38

0.015

0.38

10

10

0.030

0.76

<0.1501

<3.81

0.015

0.38

0.015

0.38

10

10

0.060

1.54

>0.150

>3.8

0.030

0.76

0.030

0.76

10

10

0.060

1.54

<0.1501 >0.753

<3.81 >193

0.030 -

0.76 -

0.030 -

0.76 -

10 12.5

10 12.5

0.120 -

3.08 -

Notes 1 Thin walled tubes. Therefore ovality tolerance increases, but mean OD at a cross section must be within permissible variation. 2 Ovality = Difference between maximum and minimum OD 3 Or tubing with ID < 60% of OD

Manufacture

· · · · Materials. Refer to chemical composition table. Manufacture. Seamless or welded, hot or cold finished. Heat Treatment. Refer to heat treatment table and supplementary requirements S1 and S3. Marking. ASTM tube general requirements, page 3-5, apply, plus indication whether the tube is seamless or welded. Also: HT temp = final heat treatment temperature if under 1900 °F (1040 °C), NDE = Nondestructive electric test performed.

Ordering Information

Item Specification number Size Quantity Name of material Grade Test report Options and supplementary requirements A 269 - 96 Outside diameter and nominal wall Random or specified lengths. Total length or number of lengths. Seamless or welded austenitic stainless steel tubes Selected from chemical composition table DIN 50049.3.1.B Standard, or DIN 50049.3.1.C optional (3rd party witness test) at extra cost Refer to optional and supplementary requirements S1 to S4 thickness Notes

Note - The above table is based on ASTM requirements except with regard to test reports, where standard practice options are added. See also page 10-2 for ISO based ordering and general delivery information.

Finish and Repair

· · Finish. Tubes to be pickled, free of scale. Where bright annealed, pickling is not necessary. Repair. ASTM tube general requirements, page 3-6, apply

Mandatory Testing

· · · · · · · Product Analysis. One billet or one length of flat rolled stock or one tube made from each heat to conform to chemical composition table. Flaring Test for seamless tubes or Flange Test for welded Tubes. One specimen to be tested from one end of one tube from each heat treated lot. Hardness Test. One specimen to be tested from two tubes from each heat treated lot. See the hardness requirements table and Exceptions (bullet) following. Reverse Flattening Test. Welded tubes only. One specimen from each 1500 ft (460 m) of finished tubing. Coiled tubing >1500 ft (460 m) (without circumferential butt welds) is sampled at both ends. Hydrostatic or Nondestructive Tests. Each tube to be tested. Exceptions. Tubing with wall thickness t<0.065 in (1.65 mm) may be tested using Rockwell superficial hardness or Vickers test. Tubes with inside diameter ID <1/4 in (6.4 mm) or t<0.020 in (0.51 mm) need not be hardness tested. Smaller tubes are tension tested only as for tube standard ASTM A 632 - 90 (see page 3-43). Lot Sizes. A lot is all tubes of same size from same heat of steel and same heat treatment. For tubes heat treated by continuous process a lot is up to 125 lengths for ODs <1 in

Optional Tests and Supplementary Requirements

· · · · · · Hydrostatic or Nondestructive Electric Testing. Final Heat Treatment at under 1900°F (1040°C) may be specified for special service characteristics. S1 Stress-Relieved Annealed Tubes. Tubes in grades TP304L, TP316L, TP321, TP347 and TP348 may be specified in this condition to improve stress corrosion resistance. Heat treat at 1550 °F (845 °C) to 1650 °F (900 °C) after roll straightening. Cool in air or by slow cooling. No further mechanical straightening is permitted. Tube straightness is as agreed with purchaser. S1 Air Underwater Pressure Test. Tube tested to 150 psi (1034 kPa) minimum underwater. S1 Stabilisation Heat Treatment. Tubes in grades TP321, TP347 and TP348 may be given this treatment using a temperature lower than that used for initial solution annealing heat treatment, as agreed with purchaser. S1 Intergranular Corrosion Test, in accordance with Practice A262 Practice E. If this test is specified, S3 may be required to achieve a pass.

Hardness Requirements

Brinell Hardness HB max 192 192 192 192 192 192 192 192 192 192 192 192 192 269 269 192 269 256 220 220 192 192 256 250 256 192 256 Vickers Hardness1 HV max 208 208 208 208 208 208 208 208 208 208 208 208 208 285 285 200 285 270 230 230 200 200 270 263 270 200 270 Rockwell Hardness HRB or C scale/max B90 B90 B90 B90 B90 B90 B90 B90 B90 B90 B90 B90 B90 C25 C25 B90 C25 B100 B96 B96 B90 B90 B100 B100 B100 B90 B100 Rockwell Superficial Hardness1, max 30T scale 74 74 74 74 74 74 74 74 74 74 74 74 74 74 80 79 74 74 74 74 74 74 74 74 15T scale 88 88 88 88 88 88 88 88 88 88 88 88 88 88 92 91 88 88 88 88 88 88 88 88 30N scale 46 46 46 15N scale 73 73 73 -

Grade TP304 TP304L TP304N TP304LN TP316H TP316L TP316N TP316LN TP317 TP321 TP321H TP347 TP348 TPXM-10 TPXM-11 TPXM-15 TPXM-19 TPXM-29

UNS S30400 S30403 S30451 S30453 S31600 S31603 S31603 S31653 S31700 S32100 S32109 S34700 S34800 S21900 S21903 S38100 S20910 S24000 S31254 S31725 S31726 S32600 S24565 S32654 N08367 N08904 N08926

Note 1 Rockwell superficial hardness test or Vickers hardness test is permissible for wall thickness <0.065 in (1.65 mm). - Hardness testing is not required for tube with inside diameter ID <1/4 in (6.4 mm) or t<0.020 in (0.51 mm).

Heat Treatment

Grade All UNS All S31254 S24565 S32654 N08367 N08904 N08926 Temperature °F 1900 2100 2050-2140 2100 2025 2000 2010 Temperature °C 1040 1150 1120-1170 1150 1107 1100 1100 Treatment Minimum heat treatment temperature. Quench1,2 Minimum heat treatment temperature. Quench1 Heat treatment temperature range. Quench1 Minimum heat treatment temperature. Quench1 Minimum solution anneal temperature. Rapid Quench. Minimum heat treatment temperature. Quench1 Minimum heat treatment temperature. Quench1

Notes - All = All grades listed in the hardness requirements table other than those identified in this table. 1 Quench in water or rapid cool by other means 2 For TP321, TP347 and TP348, solution annealing temperatures above 1950°F (1065°C) may impair resistance to intergranular corrosion when exposed to sensitising conditions. See supplementary requirement S3.

Chemical Composition

Composition Percentage, max or range Grade TP304 TP304L TP304LN TP316 TP316L TP316LN TP317 TP321 TP347 TP348 TPXM-10 TPXM-11 TPXM-15 TPXM-19 TPXM-29 UNS S30400 S30403 S30453 S31600 S31603 S31653 S31700 S32100 S34700 S34800 S21900 S21903 S38100 S20910 S24000 S31254 S30600 S31725 S31726 S24565 S32654

&DUERn 0DQJDQHVe 3KRVSKRUXs 6LOLFRn &KURPLXm

C 0.08 0.035 0.035 0.08 0.035 0.035 0.08 0.08 0.08 0.08 0.08 0.04 0.08 0.060 0.080 0.020 0.018 0.03 0.03 0.03 0.020

Mn 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 8.0-10.0 8.0-10.0 2.00 4.00-6.00 11.5014.50 1.00 2.00 2.00 2.00 5.0-7.0 2.00-4.00

P 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.060 0.060 0.030 0.040 0.060 0.030 0.02 0.040 0.040 0.030 0.030

6XOSKXUS

0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.010 0.02 0.030 0.030 0.010 0.005

Si 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 1.00 1.00 1.502.50 1.00 1.00 0.80 3.7-4.3 0.75 0.75 1.00 0.50

1LFNHl Ni

8.00-11.0 8.00-13.0 8.00-13.0 11.0-14.0 10.0-15.0 10.0-15.0 11.0-14.0 9.00-13.0 9.00-13.0 9.00-13.0 5.50-7.50 5.50-7.50 17.5-18.5 11.5-13.5 2.25-3.75 17.5-18.5 14.0-15.5 13.5-17.5 13.5-17.5 16.0-18.0 21.0-23.0

Cr 18.0-20.0 18.0-20.0 18.0-20.0 16.0-18.0 16.0-18.0 16.0-18.0 18.0-20.0 17.0-20.0 17.0-20.0 17.0-20.0 19.0-21.5 19.0-21.5 17.0-19.0 20.5-23.5 17.0-19.0 19.5-20.5 17.0-18.5 18.0-20.0 17.0-20.0 23.0-25.0 24.0-25.0

0RO\EGHQXm Mo

Note

2.0-3.0 2.0-3.0 2.0-3.0 3.0-4.0 1.50-3.00 6.00-6.50 0.20 4.0-5.0 4.0-5.0 4.0-5.0 7.00-8.00 7 8 9 10 11,12 12,13 14 15 3 4 4,5 6 6 16 1,16 2 16 1,16

Notes - For Product Analysis, tolerances in ASTM A 480/A 480M apply (unless the Carbon content is specified as 0.04% or less). The A 480 tolerances are not included in this summary. N08367, N08904 and N08926 are not included in the A 269 - 96 chemical requirements table.

Composition Notes

1 Nitrogen 0.10-0.16% 2 For welded tube the nickel range is 10.0-14.0% 3 Titanium >5 x Carbon and 0.70% max 4 Niobium + Tantalum >10 x Carbon and 1.00% max 5 Tantalum 0.10% 6 Nitrogen 0.15-0.40% 7 Niobium + Tantalum: 0.10-0.30%, Nitrogen 0.20-0.40%, Vanadium 0.10-0.30% 8 Nitrogen 0.20-0.40% 9 Nitrogen 0.18-0.22%, Copper 0.50-1.00% 10 Copper 0.50% max 11 Nitrogen 0.10 max, Copper 0.75% max 12 For welded tube, Phosphorus 0.045% max 13 Nitrogen 0.10-0.20%, Copper 0.75% max 14 Niobium + Tantalum: 0.1% max, Nitrogen 0.4-0.6% 15 Nitrogen 0.45-0.55%, Copper 0.30-0.60% 16 Carbon 0.040% max is necessary for tubes where many drawing passes are required, as with outside diameter <0.5 in (12.7mm) or nominal wall thickness <0.049 in (1.2 mm) (minimum wall thickness <0.044 in (1.12 mm)) Note - Niobium is sometimes referred to as Columbium.

Information

ASTM A 269 - 96

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