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ASTM A511/A511M Standard Specification for Mechanical

ASTM A511/A511M specification covers seamless stainless tubing for use in mechanical applications where corrosion-resistant or high-temperature strength is needed.

ASTM A511 Seamless Stainless Steel Tubing

If you require details of ASTM A511-04, refer here ASTM A511-04...
Keywords:
austenitic stainless steel
mechanical tubing
seamless steel tube
stainless steel pipe
steel tube
Abstract
This specification covers seamless stainless steel tubing for use in mechanical applications where corrosion-resistant or high-temperature strength is needed. The steel may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The tubes shall be made by a seamless process and by either cold working or hot working as specified. Seamless stainless steel tubing is a tubular product made without a welded seam. It is usually manufactured by hot working steel and then cold finishing the hot-worked tubing to produce the desired shape, dimensions and properties All austenitic tubes shall be furnished in the annealed condition. An analysis of each heat of steel shall be made to determine the percentages of the elements specified. If secondary melting processes are employed, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope:
1.1 This specification covers seamless stainless steel tube for use in mechanical applications where corrosion-resistant or high-temperature strength is needed. The grades covered are listed in Table 1 and Table 2.
1.2 This specification covers seamless cold-finished mechanical tubing and seamless hot-finished mechanical tubing in sizes up to 12¾ in. [325 mm] in outside nominal diameter (for round tubing) with wall thicknesses as required.
1.3 Tubes shall be furnished in one of the following shapes, as specified by the purchaser: round, square, rectangular, or special.
1.4 Optional supplementary requirements are provided and when desired, shall be stated in the order.
1.5 The values stated in inch-pound units are to be regarded as the standard. Within the text, the SI units are shown in square brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.
2. Referenced Documents
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
E59 Practice for Sampling Steel and Iron for Determination of Chemical Composition
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
Index Terms:
austenitic stainless steel; mechanical tubing; seamless steel tube; stainless steel pipe; steel tube; Corrosive service applications--tube (steel);
High-temperature service applications--steel tube; Mechanical tubing--specifications; Seamless steel tube--specifications; Stainless steel pipe--specifications; ICS Number Code 23.040.10; 23.040.40; ICS Number Code 23.040.10; 23.040.40
For More Details,Please refer to: ASTM A511/511M

TABLE 1 Chemical Requirements of Austenitic Stainless Steels

Grade
Composition, %
Carbon
Manga-
nese, max
Phos-
pho-
rus,
max
Sul-
fur,
max
Silicon, max
Nickel
Chromium
Molybdenum
Titanium
Columbium plus Tantalum
Selenium
MT 302 0.08 to 0.20 2.00 0.040 0.030 1.00 8.0–10.0 17.0–19.0 ... ... ... ...
MT 303 0.15 max 2.00 0.20 0.15 min 1.00 8.0–10.0 17.0–19.0 ... ... ... ...
MT 303Se 0.15 max 2.00 0.040 0.040 1.00 8.0–11.0 17.0–19.0 ... ... ... 0.12–0.2
MT 304 0.08 max 2.00 0.040 0.030 1.00 8.0–11.0 18.0–20.0 ... ... ... ...
MT 304L 0.035 maxA 2.00 0.040 0.030 1.00 8.0–13.0 18.0–20.0 ... ... ... ...
MT 305 0.12 2.00 0.040 0.030 1.00 10.0–13.0 17.0–19.0 ... ... ... ...
MT 309S 0.08 max 2.00 0.040 0.030 1.00 12.0–15.0 22.0–24.0 ... ... ... ...
MT 310S 0.08 max 2.00 0.040 0.030 1.00 19.0–22.0 24.0–26.0 ... ... ... ...
MT 316 0.08 max 2.00 0.040 0.030 1.00 11.0–14.0 16.0–18.0 2.0–3.0 ... ... ...
MT 316L 0.035 maxA 2.00 0.040 0.030 1.00 10.0–15.0 16.0–18.0 2.0–3.0 ... ... ...
MT 317 0.08 max 2.00 0.040 0.030 1.00 11.0–14.0 18.0–20.0 3.0–4.0 ... ... ...
MT 321 0.08 max 2.00 0.040 0.030 1.00 9.0–13.0 17.0–20.0 ... B ... ...
MT 347 0.08 max 2.00 0.040 0.030 1.00 9.0–13.0 17.0–20.0 ... ... C ...

A For small diameter or thin wall tubing or both, where many drawing passes are required, a maximum of 0.040 % carbon is necessary in grades MT-304L and MT-316L. Small outside diameter tubes are defined as those under a 0.500 in. [12.7 mm] outside diameter and light-wall tubes as those under a 0.049 in. [1.2 mm] average wall thickness (0.044 in. [1.1 mm] min wall thickness).

B The titanium content shall be not less than five times the carbon content and not more than 0.60 %.

C The columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.00 %.

TABLE 2 Chemical Requirements of Ferritic and Martensitic Stainless Steels

Grade
Composition, %
Carbon, max
Manga-
nese,
max
Phos-
phorus,
max
Sulfur,
max
Silicon, max
Nickel
Chromium
Molyb-
denum
Aluminum
Copper
Nitrogen
Selenium
Martensitic
MT 403 0.15 1.00 0.040 0.030 0.50 0.50 max 11.5–13.0 0.60 max
MT 410 0.15 1.00 0.040 0.030 1.00 0.50 max 11.5–13.5 ... ... ... ... ...
MT 414 0.15 1.00 0.040 0.030 1.00 1.25–2.50 11.5–13.5 ... ... ... ... ...
MT 416Se 0.15 1.25 0.060 0.060 1.00 0.50 max 12.0–14.0 ... ... ... ... 0.12–0.20
MT 431 0.20 1.00 0.040 0.030 1.00 1.25–2.50 15.0–17.0 ... ... ... ... ...
MT 440A 0.60 to 0.75 1.00 0.040 0.030 1.00 ... 16.0–18.0 0.75 max ... ... ... ...
Ferritic
MT 405 0.08 1.00 0.040 0.030 1.00 0.50 max 11.5–14.5 ... 0.10–0.30 ... ... ...
MT 429 0.12 1.00 0.040 0.030 1.00 0.50 max 14.0–16.0 ... ... ... ... ...
MT 430 0.12 1.00 0.040 0.030 1.00 0.50 max 16.0–18.0 ... ... ... ... ...
MT 443 0.20 1.00 0.040 0.030 1.00 0.50 max 18.0–23.0 ... ... 0.90–1.25 ... ...
MT 446–1 0.20 1.50 0.040 0.030 1.00 0.50 max 23.0–30.0 ... ... ... 0.25 max ...
MT 446–2A 0.12 1.50 0.040 0.030 1.00 0.50 max 23.0–30.0 ... ... ... 0.25 max ...
29-4 0.010 0.30 0.025 0.020 0.20 0.15 max 28.0–30.0 3.5–4.2 ... 0.15 max 0.020 max ...
29-4-2 0.010 0.30 0.025 0.020 0.20 2.0–2.5 28.0–30.0 3.5–4.2 ... 0.15 max 0.020 maxB ...

A MT446-2 is a lower carbon version of MT446-1, that has a lower tensile strength but improved ductility and toughness.

B Carbon plus nitrogen = 0.025 max %.

Austenitic stainless steel
Steel No. Standard No. Type Chemical composition Other
C Si S P Mn Cr Ni Mo Other ób ós δ5 HB
00Cr17Ni14Mo2 GB1220 Bar 0.03 1 0.03 0.035 2 16-18 12-15 2-3 480 177 40 187 ψ%:60
00Cr17Ni14Mo2 GB4237 Plate 0.03 1 0.03 0.035 2 16-18 12-15 2-3 480 177 40 187
00Cr17Ni14Mo2 GB/T14976 Pipe 0.03 1 0.03 0.035 2 16-18 12-15 2-3 480 175 35
00Cr19Ni10 GB1220 Bar 0.03 1 0.03 0.035 2 18-20 8-12 480 177 40 187 ψ%:60
00Cr19Ni10 GB4237 Plate 0.03 1 0.03 0.035 2 18-20 8-12 480 177 40 187
00Cr19Ni10 GB/T14976 Pipe 0.03 1 0.03 0.035 2 18-20 8-12 480 175 35
0Cr17Ni12Mo2 GB1220 Bar 0.8 1 0.03 0.035 2 16-18.5 10-14 2-3 520 205 40 187 ψ%:60
0Cr17Ni12Mo2 GB4237 Plate 0.8 1 0.03 0.035 2 16-18 10-14 2-3 520 205 40 187
0Cr17Ni12Mo2 GB/T14976 Pipe 0.8 1 0.03 0.035 2 16-18.5 10-14 2-3 520 205 35
0Cr18Ni9 GB1220 Bar 0.7 1 0.03 0.035 2 17-19 8-11 520 205 40 187 ψ%:60
0Cr18Ni9 GB4237 Plate 0.7 1 0.03 0.035 2 17-19 8-11 520 205 40 187
0Cr18Ni9 GB/T14976 Pipe 0.7 1 0.03 0.035 2 17-19 8-11 520 205 35
0Cr18Ni10Ti GB1220 Bar 0.8 1 0.03 0.035 2 17-19 9-12 Ti:5C 520 205 40 187 ψ%:50
0Cr18Ni10Ti GB4237 Plate 0.8 1 0.03 0.035 2 17-19 9-12 Ti:5C 520 205 40 187
0Cr18Ni10Ti GB/T14976 Pipe 0.8 1 0.03 0.035 2 17-19 9-12 Ti:5C 520 205 35
0Cr18Ni12Mo2Ti GB1220 Bar 0.8 1 0.03 0.035 2 16-19 11-14 1.8-2.5 Ti:5C-0.7 530 205 40 187 ψ%:55
0Cr18Ni12Mo2Ti GB4237 Plate 0.8 1 0.03 0.035 2 16-19 11-14 1.8-2.5 Ti:5C-0.7 530 205 37 187
0Cr18Ni12Mo2Ti GB/T14976 Pipe 0.8 1 0.03 0.035 2 16-19 11-14 1.8-2.5 Ti:5C-0.7 530 205 35
1Cr18Ni9 GB4237 Plate 0.15 1 0.03 0.035 2 17-19 8-10 520 205 40 187
1Cr18Ni9 GB5310 Pipe 0.15 1 0.03 0.035 2 17-19 8-10 Cu:0.2 520 205 35
0Cr25Ni20 GB1220 Bar 0.08 1 0.03 0.035 2 24-26 19-22 520 206 40 187
ASTM A312/A312M
Steel No. Type Chemical composition
C Si S P Mn Cr Ni Mo Other ób ós δ5 HB
TP304 0.08 0.75 0.03 0.04 2 18-20 8-11 515 205 35
TP304H 0.04-0.1 0.75 0.03 0.04 2 18-20 8-11 515 205 35
TP304L 0.035 0.75 0.03 0.04 2 18-20 8-13 485 170 35
TP316L 0.035 0.75 0.03 0.04 2 16-18 10-15 2-3 485 170 35
TP321 0.08 0.75 0.03 0.04 2 17-20 9-13 Ti:5C%-0.7 515 205 35
ASTM A312 Mechanical Property:
Steel Grade Heat Treatment Temperure Min. º F(º C) Tensile Strength Ksi (MPa), Min. Yield Strength Ksi (MPa), Min. Elongation %, Min
TP304 Solution 1900 (1040) 75(515) 30(205) 35
TP304L Solution 1900 (1040) 70(485) 25(170) 35
TP304H Solution 1900 (1040) 75(515) 30(205) 35
TP310S Solution 1900 (1040) 75(515) 30(205) 35
TP316 Solution 1900(1040) 75(515) 30(205) 35
TP316L Solution 1900(1040) 70(485) 25(170) 35
TP316H Solution 1900(1040) 75(515) 30(205) 35
TP316Ti Solution 1900(1040) 75(515) 30(205) 35
TP321 Solution 1900(1040) 75(515) 30(205) 35
TP321H Solution Cold: 2000(1100) Hot: 1925(1050) 75(515) 30(205) 35
TP347 Solution 1900(1040) 75(515) 30(205) 35
TP347H Solution Cold: 2000(1100) Hot: 1925(1050) 75(515) 30(205)
ASTM A312 Equivalent steel grade:
ASTM A312 JIS G3459 DIN 17440 BS NF
TP304 SUS 304 TP X5CrNi 18 9 304S18 A 49-230
TP304H SUS 304 HTP 304S59 A 49-214
TP310 304 LTP X2 CrNi 19 9 304S14 A 49-230
TP316 SUS 304L TP
TP316H 310STP X5 CrNiMo 18 10 316S18 A 35-573
TP316L SUS 316 TP 316S59 A 49-230
TP321 SUS 316 LTP X2 CrNiMo 18 10 316S14 A 49-230
TP347 316 HTP x10 CrNiTi 18 9 321S18 A 49-230
TP347H SUS 316 LTP X5 CrNiNb 18 9 347S18 A 35-573
Nominal wall thickness for ASTM A312(Seamless and straight seame welded steel pipes)
NPS ASTM A312  WT Tolerance, %
+
1/8-2 1 /2 20.0 12.5
3~18, t/D≤ 5% 22.5 12.5
3~18, t/D> 5% 15.0 12.5
≥ 20, welded 17.5 12.5
≥ 20, seamless, t/D≤ 5% 22.5 12.5
≥ 20, seamless, t/D> 5% 15.0 12.5
ASTM A312 Stainless Steel Pipes OD Tolerance
NPS ASTM A312  OD Tolerance
+
inch mm inch mm
1/8~1 1 /2 > 1 1 /2~4 > 4~8 > 8~18 > 18~26 > 26~34 > 34~48 1/64(0.015) 1/32(0.031) 1/16(0.062) 3/32(0.093) 1/8(0.125) 5/32(0.156) 3/16(0.187) 0.4 0.8 1.6 2.4 3.2 4.0 4.8 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 0.8 0.8 0.8 0.8 0.8 0.8 0.8


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