ASTM A358/A358M-12 - 1.12.2012
 
1. Scope

1.1 This specification2 covers electric-fusion-welded austenitic chromium-nickel stainless steel pipe suitable for corrosive or high-temperature service, or both, or for general applications.

Note 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”

1.2 This specification covers the grades of alloy and stainless steel listed in Table 1. The selection of the proper grade and requirements for heat treatment shall be at the discretion of the purchaser, dependent on the service conditions to be encountered.

TABLE 1 Plate and Filler Metal Specifications

Grade

UNS
Desig-
nation

Material,
Type

ASTM Plate Specification No.
and Grade

Filler Metal Classification and UNS DesignationA for ApplicableB AWS Specification

A5.4/A5.4M

A5.9/A5.9M

A5.11/A5.11M

A5.14/A5.14M

A5.22/A5.22M

A5.30/A5.30M

Class.

UNS

Class.

 

UNS

Class.

UNS

Class.

UNS

Class.

UNS

Class.

 UNS

 

 

. . .

N08020

. . .

 A240
N08020

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

N08367

. . .

 A240
N08367

. . .

. . .

. . .

 

. . .

ENiCrMo-3 

W86112

ERNiCrMo-3 

N06625

. . .

. . .

. . .

. . .

. . .

N08800

. . .

 A240
N08800

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

N08810

. . .

 A240
N08810

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

N08904

. . .

 A240
N08904

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

N08926

. . .

 A240
N08926

. . .

. . .

. . .

 

. . .

ENiCrMo–3 

W86112

ERNiCrMo–3 

N06625

. . .

. . .

. . .

. . .

201

S20100

201

 A240
Type 201

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

201LN

S20153

201LN

 A240
Type 201LN

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

S20400

. . .

 A240
S20400

E 209

W32210

ER209

 

S20980

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

XM-19

S22100

XM-19

 A240
Type XM-19

E209 

W32210

ER209 

 

S20980

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

XM-29

S28300

XM-29

 A240
Type XM-29

E240 

W32410

ER240 

 

S24080

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

304

S30400

304 

 A240
Type 304

E308 

W30810

ER308 

 

S30880

. . .

. . .

. . .

. . .

E308T 

W30831

IN308 

S30880

304L

S30403

304L 

 A240
Type 304

E308L

W30813

ER308L

 

S30883

. . .

. . .

. . .

. . .

E308LT

W30835

IN308L

S30883

304H

S30409

304H 

 A240
Type 304H

E308H

W30810

ER308 

 

S30880

. . .

. . .

. . .

. . .

E308T 

W30831

IN308 

S30880

. . .

S30415

. . .

 A240
S30415

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

304N

S30451

304N 

 A240
Type 304N

E308 

W30810

ER308 

 

S30880

. . .

. . .

. . .

. . .

E308T 

W30831

IN308 

S30880

304LN

S30453

304LN

 A240
Type 304LN

E308L

W30813

ER308L

 

S30883

. . .

. . .

. . .

. . .

E308LTT

W30835

IN308L

S30883

. . .

 S30600D

. . .

 A240
S30600D

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

S30815

. . .

 A240
S30815

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

309S

S30908

309S 

A240
Type 309S

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

309Cb

S30940

309Nb

 A240
Type 309Cb

 E309Cb

W30917

. . . 

 

. . . 

. . . 

. . . 

. . . 

. . . 

. . . 

. . . 

. . . 

. . . 

310S

S31008

310S 

 A240
Type 310S

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

310Cb

S31040

310Cb

 A240
Type 310Cb

 E310NB

W31017

. . . 

 

. . . 

. . .

. . .

. . . 

. . .

. . ..

. . .

. . .

. . .

. . .

S31254

. . .

 A240
S31254

. . .

. . .

. . .

 

. . .

ENiCrMo-3 

W86112

ERNiCrMo-3 

N06625

. . .

. . .

. . .

. . .

. . .

S31266

. . .

 A240
S31266

. . .

. . .

. . .

 

. . .

ENiCrMo–13

W86059

ERNiCrMo–13

N06059

. . .

. . .

. . .

. . .

. . .

S31266

. . .

 A240
S31266

. . .

. . .

. . .

 

. . .

ENiCrMo–10

W86022

ERNiCrMo–10

N06022

. . .

. . .

. . .

. . .

316

S31600

316 

 A240
Type 316

E316 

W31610

ER316 

 

S31680
W31640

. . .

. . .

. . .

. . .

E316T 

W31631

IN316 

S31680

316L

S31603

316L 

 A240
Type 316L

E316L

W31613

ER316L

 

S31683

. . .

. . .

. . .

. . .

E316LT

W31635

IN316L

S31683

316H

S31609

316H 

 A240
Type 316H

E316H

W31610

ER316H

 

S31680

. . .

. . .

. . .

. . .

E316T 

W31631

IN316 

S31680

316N

S31651

316N 

 A240
Type 316N

E316 

W31610

ER316 

 

S31680

. . .

. . .

. . .

. . .

E316T 

W31631

IN316 

S31680

316LN

S31653

316LN

 A240
Type 316LN

E316L

W31613

ER316L

 

S31683

. . .

. . .

. . .

. . .

E316LT

W31635

IN316L

S31683

317

S31700

317

 A240
Type 317

E317

W31710

ER 317

 

S31780

. . .

. . .

. . .

. . .

E317LT

W31735

. . .

. . .

317L

S31703

317L

 A240
Type 317L

E317L

W34713

ER317L

 

S31783

. . .

. . .

. . .

. . .

E317LT

W31735

. . .

. . .

. . .

S31725

. . .

 A240
S31725

. . .

. . .

. . .

 

. . .

ENiCrMo-3 

W86112

ERNiCrMo-3 

N06625

. . .

. . .

. . .

. . .

. . .

S31726

. . .

 A240
S31726

. . .

. . .

. . .

 

. . .

ENiCrMo-3 

W86112

ERNiCrMo-3 

N06625

. . .

. . .

. . .

. . .

. . .

S31727

. . .

 A240
S31727

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

S32050

. . .

 A240
S32050

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

S32053

. . .

 A240
S32053

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

321

S32100

321 

 A240
Type 321

E347 

W34710

ER321 
 
ER347 

 

S32180
S34780

. . .

. . .

. . .

. . .

E347T 

W34731

IN348 

S34780

321HC

S32109C

321HC

 A240
Type 321HC

 

W34710

ER321

ER347

 

S32180
S34780

 

 

 

 

E347T

W34731

IN348

S34780

. . .

S32654

. . .

 A240
S32654

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

S34565

. . .

 A240
S34565

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

347

S34700

347 

 A240
Type 347

E347 

W34710

ER347 

 

S34780

. . .

. . .

. . .

. . .

E347T 

W34731

IN348 

S34780

347HC

S34709C

347HC

 A240
Type 347HC

 

 

ER347

 

S34780

 

 

 

 

E347T

W34731

IN348

S34780

347LN

S34751

 

A240
Type 347LN

. . .

. . .

. . .

 

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

348

S34800

348 

 A240
Type 348

E347 

W34710

ER347 

 

S34780

. . .

. . .

. . .

. . .

E347T 

W34731

IN348 

S34780

A New designation established in accordance with Practice E527and SAE J1086.
B Choice of American Welding Society specification depends on the welding process used.
C Minimum carbon content of the filler metal shall be 0.040 mass %.
D In previous editions, S30600 was incorrectly shown as S01815.

1.3 Five classes of pipe are covered as follows:

1.3.1 Class 1—Pipe shall be double welded by processes employing filler metal in all passes and shall be completely radiographed.

1.3.2 Class 2—Pipe shall be double welded by processes employing filler metal in all passes. No radiography is required.

1.3.3 Class 3—Pipe shall be single welded by processes employing filler metal in all passes and shall be completely radiographed.

1.3.4 Class 4—Same as Class 3 except that the weld pass exposed to the inside pipe surface may be made without the addition of filler metal (see 6.2.2.1 and 6.2.2.2).

1.3.5 Class 5—Pipe shall be double welded by processes employing filler metal in all passes and shall be spot radiographed.

1.4 Supplementary requirements covering provisions ranging from additional testing to formalized procedures for manufacturing practice are provided. Supplementary Requirements S1 through S6 are included as options to be specified when desired.

1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

 
2. Referenced Documents

A262-15(2021)

Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels

A480/A480M-25b

Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip (Includes all amendments and changes 9/10/2025).

A240/A240M-26

Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

E527-23

Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

A999/A999M-23

Standard Specification for General Requirements for Alloy and Stainless Steel Pipe

A941-26a

Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys (Includes all amendments and changes 4/15/2026).