Upstream Duplex Stainless Steel Requirements - xdocs.net

GP 29-01-02 Upstream Duplex Stainless Steel Requirements August 2003

Upstream Duplex Stainless Steel Requirements

GP 29-01-02

Scope

This Global Practice (GP) covers the minimum requirements for procuring, fabricating, testing, and

inspecting Duplex 22%Cr and Super Duplex 25%Cr Stainless Steels.

Upstream For ExxonMobil Use Only Version 1.0.0

of 71 ©ExxonMobil Development Company


Table of Contents

1. Required References ............................................................................................ 4

1.1. ASME–American Society of Mechanical Engineers ..................................... 4

1.2. ASTM–American Society for Testing and Materials ..................................... 4

2. Use of this Global Practice................................................................................... 5

2.1. General......................................................................................................... 5

2.2. Material Technical Sheets ............................................................................ 5

2.3. Welding Duplex 22% Cr and Super Duplex 25% Cr SS Technical Sheet..... 5

2.4. Fischer Ferrite Scope Specification .............................................................. 5

3. Duplex 22% Cr Stainless Steel / Technical Sheets............................................. 7

3.1. Technical Sheet: Duplex 22% Cr Stainless Steel Bars and Shapes............ 7

3.2. Technical Sheet: Duplex 22% Cr Stainless Steel Castings ....................... 10

3.3. Technical Sheet: Duplex 22% Cr Stainless Steel Forgings ....................... 13

3.4. Technical Sheet: Duplex 22% Cr Stainless Steel Plate ............................. 16

3.5. Technical Sheet: Duplex 22% Cr Stainless Steel Process Tubing ............ 18

3.6. Technical Sheet: Duplex 22% Cr Stainless Steel Seamless Pipe ............. 21

3.7. Technical Sheet: Duplex 22% Cr Stainless Steel Wrought Fittings ........... 24

3.8. Technical Sheet: Duplex 22% Cr Stainless Steel Welded Pipe................. 27

4. Duplex 25% Cr Stainless Steel / Technical Sheets........................................... 30

4.1. Technical Sheet: Super Duplex 25% Cr Stainless Steel Bars and Shapes30

4.2. Technical Sheet: Super Duplex 25% Cr Stainless Steel Castings............. 33

4.3. Technical Sheet: Super Duplex 25% Cr Stainless Steel Forgings............. 36

4.4. Technical Sheet: Super Duplex 25% Cr Stainless Steel Plate .................. 39

4.5. Technical Sheet: Super Duplex 25% Cr Stainless Steel Process Tubing.. 42

4.6. Technical Sheet: Super Duplex 25% Cr Stainless Steel Seamless Pipe... 45

4.7. Technical Sheet: Super Duplex 25% Cr Stainless Steel Wrought Fittings. 48

4.8. Technical Sheet: Super Duplex 25% Cr Stainless Steel Welded Pipe ...... 51

4.9. Technical Sheet: Super Duplex 25% Cr Stainless Steel Umbilical Tubing 54

5. Welding Duplex 22% Cr and Super Duplex 25% Cr Stainless Steels / Technical Sheet................................................................................................... 57

6. Fischer Ferrite Scope Specification .................................................................. 63

6.1. Introduction................................................................................................. 63

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6.2. Scope ......................................................................................................... 63

6.3. Equipment .................................................................................................. 63

6.4. Calibration Standards and Blocks............................................................... 63

6.5. Applicability ................................................................................................ 64

6.6. Surface preparation .................................................................................... 64

6.7. Calibration of Equipment ............................................................................ 65

6.8. Ferrite Measurements ................................................................................ 66

6.9. Ferrite Measurement Locations .................................................................. 67

6.10. Evaluations of Results ................................................................................ 68

6.11. Personnel Qualifications............................................................................. 69

Record of Change ....................................................................................................... 70

Attachment: Purpose Codes Definitions.................................................................. 71




1. Required References

This Section lists Practices and Standards that are generically referenced and assumed to be a part of this

document. Unless otherwise specified herein, use the latest edition.

1.1. ASME–American Society of Mechanical Engineers

ASME B16.34 Valves - Flanged, Threaded, and Welding End

ASME SEC V BPVC Section V - Nondestructive Examination

ASME SEC VIII D1 BPVC Section VIII - Rules for Construction of Pressure Vessels -

Division 1

1.2. ASTM–American Society for Testing and Materials

ASTM A 182/A 182M Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges,

Forged Fittings, and Valves and Parts for High-Temperature Service

ASTM A 240/A 240M Standard Specification for Chromium and Chromium-Nickel Stainless

Steel Plate, Sheet, and Strip for Pressure Vessels and for General

Applications

ASTM A 262 Standard Practices for Detecting Susceptibility to Intergranular Attack in

Austenitic Stainless Steels

ASTM A 276 Standard Specification for Stainless Steel Bars and Shapes

ASTM A 370 Standard Test Methods and Definitions for Mechanical Testing of Steel

Products

ASTM A 380 Standard Practice for Cleaning, Descaling, and Passivation of Stainless

Steel Parts, Equipment, and Systems

ASTM A 450/A

450M/A 450M

Standard Specification for General Requirements for Carbon, Ferritic

Alloy, and Austenitic Alloy Steel Tubes

ASTM A 789/A 789M Standard Specification for Seamless and Welded Ferritic/Austenitic

Stainless Steel Tubing for General Service

ASTM A 790/A 790M Standard Specification for Seamless and Welded Ferritic/Austenitic

Stainless Steel Pipe

ASTM A 815/A 815M Standard Specification for Wrought Ferritic, Ferritic/Austenitic, and

Martensitic Stainless Steel Piping Fittings

ASTM A 890/A 890M Standard Specification for Castings, Iron-Chromium-Nickel-

Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for

General Application

ASTM A 928/A 928M Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel

Pipe Electric Fusion Welded with Addition of Filler Metal




ASTM A 995/A 995M Standard Specification for Castings, Austenitic-Ferritic (Duplex)

Stainless Steel, for Pressure-Containing Parts

ASTM E 407 Standard Practice for Microetching Metals and Alloys

ASTM E 562 Standard Test Method for Determining Volume Fraction by Systematic

Manual Point Count

ASTM G 48 Standard Test Methods for Pitting and Crevice Corrosion Resistance of

Stainless Steels and Related Alloys by Use of Ferric Chloride Solution

2. Use of this Global Practice

2.1. General

1) This Global Practice was designed to allow the individual Technical Sheets and Sections to be

extracted from this document and submitted with standard material specifications for procurement

and fabrication.

2) The Technical Sheets identify additional material testing requirements deemed necessary by

Company in order for the material to meet its intended service life.

2.2. Material Technical Sheets

1) The individual Technical Sheets shall be used as supplemental requirements to existing material

specifications (e.g., ASTM, ISO, UNS, etc.).

2) The Technical Sheets reflect the additional requirements of Company imposed on the manufacturers

and material suppliers in order to maintain a quality level that is consistent for the material being

supplied.

3) The Technical Sheets shall not be used as stand-alone documents for procuring or fabricating

materials or components.

2.3. Welding Duplex 22% Cr and Super Duplex 25% Cr SS Technical Sheet

1) The Welding Technical Sheet shall be used as supplemental requirements to existing welding

qualification codes, standards, and specifications.

2) The Welding Technical Sheet shall become an integral part of the Technical Sheets when submitted

to manufacturers or suppliers for material or components that require fabrication by welding.

3) The Welding Technical Sheet shall not be used as a stand-alone document for welding qualifications.

2.4. Fischer Ferrite Scope Specification

1) This Section of the GP is intended to be used for nondestructive measurements of ferrite content in

Duplex Stainless Steels using a Fischer ferrite scope model MP30.




2) This Section shall be used and become an integral part of the Technical Sheets whenever the

Technical Sheets indicate a Nondestructive Ferrite Measurement is required.

3) This Section shall also be used when any Duplex or Super Duplex materials are fabricated by

welding.

4) This Section shall be used in conjunction with Company specifications for the individual duplex

products.




3. Duplex 22% Cr Stainless Steel / Technical Sheets

3.1. Technical Sheet: Duplex 22% Cr Stainless Steel Bars and Shapes

Technical Sheet 3.1: Duplex 22% Cr Stainless Steel Bars and Shapes

Product Form Bars and Shapes (including, but not limited to, rounds, hexagonals, angles,

tees, etc.)

Material 22% Chromium Ferritic/Austenitic Stainless Steel, often referred to as Duplex

Stainless Steel.

Scope This material Technical sheet is intended to supplement existing material

standards and specifications (e.g., ASTM, ISO, UNS, etc.,) and project

specifications for duplex stainless steel bar products and rolled shapes. The

requirements specified on this Technical sheet are in addition to the

requirements established by the governing standard. In case of conflict

between this standard and the governing standard, the more stringent

requirement(s) shall apply. This Technical sheet is not intended to serve as a

stand-alone document.

Manufacturer

Approval

Materials supplied in accordance to this specification shall only be supplied by

Company approved manufacturers.

Specification ASTM A 276

Grade(s) UNS S31803

Manufacturing

Process

Electric arc or electric furnace and refined by AOD or equivalent process.

Heat Treatment All material shall be delivered in the solution annealed followed by water

quench condition.

Pitting Resistance

Equivalent

Pitting Resistance Equivalent (PRE) = Cr + 3.3Mo + 16N. The PRE shall be

greater than or equal to 34.0

Hardness Per ASTM standard. If no hardness required by ASTM standard, maximum

shall be HRC 28, HB 271, or HV 290





-- Charpy V-notch (ASTM A 370)

-- Not applicable when the maximum obtainable Charpy specimen has a

width along the notch of less than 2.5 mm.

-- Absorbed energy shall be 48J average and 36J single value minimum.

-- Test temperature shall be minus 46°C.

-- Specimens shall be oriented transverse to the rolling direction.

Impact Testing

-- When product shape or dimensions prevent the use of transverse

specimens, then longitudinal specimens may be used.

ASTM E 562

-- Ferrite content shall be determined by manual point count at locations near

the surface of the shape and at mid-thickness

-- Samples shall be electrolytically etched in either NaOH or KOH, and in

such a manner as to provide optimum contrast for austenite and ferrite

phase discrimination

-- Point count shall be conducted at a minimum of 500X magnification

-- A minimum of 30 fields and 16 points per field shall be used

Ferrite Content

-- Ferrite content shall be between 35% - 55%

-- Metallographic examination shall be conducted on samples taken from

near the surface of the shape and from mid-thickness.

-- Samples shall be etched using ASTM E 407 etchant number 98

(K3Fe(CN)4 with KOH or NaOH)

-- Etching shall be performed in such a manner as to provide optimum

resolution of potential precipitates

-- Examination shall be conducted at a minimum of 500X magnification.

Metallographic

Examination

-- Intermetallic phases or precipitates are allowed up to a max. of 0.05

percent.

Extent of Testing All testing shall be conducted on each heat, size, shape configuration, and heat

treatment lot.

Repair of Defects Weld repairs are not allowed

Surface Finish White Pickled





-- Product shall be handled, shipped and stored in such a manner as to

prevent or minimize the possibility of free iron contamination

-- Product shall not be handled with bare steel hooks, chains or lifting forks

without the use of protective insulating material

-- Only stainless steel wire brushes, designated for use only on stainless steel

products, may be used for brushing and descaling

-- Suspected free iron contamination, such as evidenced by unusual stains or

discoloration, shall be verified by ferroxyl testing in accordance with the

procedures outlined in ASTM A 380

Handling,

Shipment, and

Storage

-- Free iron contaminated areas shall be cleaned and passivated, at the

manufacturer’s expense, using the procedures outlined in ASTM A 380

Certification EN 10204 - 3.1B




3.2. Technical Sheet: Duplex 22% Cr Stainless Steel Castings

Technical Sheet 3.2: Duplex 22% Cr Stainless Steel Castings

Product Form Castings (for valve bodies, pump housings, fittings, and misc. machinery

components, etc.)

Material 22% Chromium Ferritic/Austenitic Stainless Steel, often referred to as Duplex

Stainless Steel.

Scope This material Technical sheet is intended to supplement existing material

standards and specifications (e.g., ASTM, ISO, UNS, etc.,) and project

specifications for duplex stainless steel castings. The requirements specified on

this Technical sheet are in addition to the requirements established by the

governing standard. In case of conflict between this standard and the governing

standard, the more stringent requirement(s) shall apply. This Technical sheet is

not intended to serve as a stand alone document.

Manufacturer

Approval

Materials supplied in accordance to this specification shall only be supplied by

Company approved manufacturers.

Specification ASTM A 890/A 890M, ASTM A 995/A 995M

Grade(s) 4A (UNS J92205)

Supplemental

requirements

S2, S3, S33

Manufacturing

Process

Electric arc or electric furnace and refined by AOD or equivalent process.

Heat Treatment All material shall be delivered in the solution annealed (followed by water

quench) condition.

Pitting Resistance

Equivalent

Pitting Resistance Equivalent (PRE) = Cr + 3.3Mo + 16N. The PRE shall be

greater than or equal to 34.0

Hardness Per ASTM standard. If no hardness required by ASTM standard, maximum

shall be HRC 28, HB 271, or HV 290.

-- Charpy V-notch (ASTM A 370)

-- Not applicable when the maximum obtainable Charpy specimen has a

width along the notch of less than 2.5 mm.

-- Absorbed energy shall be 48J average and 36J single value minimum.

Impact Testing

-- Test temperature shall be minus 46°C.



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