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TMCP Structural Steel Product Data Sheet 2012 04 01

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API 2W Grade 50TMCP Structural Steel Plate

General Product DescriptionAPI 2W Grade 50 is an intermediate-strength, structural steel plate, produced by thermo-mechanicalcontrol processing (TMCP),that is used in the welded construction of offshore structures. API 2W Grade50 has a minimum yield strength of 50 ksi [345 MPa] and a minimum, mid-thickness, transverse CharpyV-notch impact toughness of 30 ft-lbf [41 J] at -40F [-40C]. SSAB is an API Licensee under the APIMonogram Program.

Appl ications: API 2W Grade 50 is intended primarily for use in offshore structures in critical portionsthat must exhibit good impact toughness and resistance to plastic fatigue loading and lamellar tearing.The primary use of API 2W Grade 50 is in tubular joints, stiffened plate construction and otherintersections where portions of the plates will be subjected to tension in the through-thickness (Z)direction.

Dimensions: The following API 2W Grade 50 plate sizes are available:Thickness: 0.500 1.50 (12.7 mm 38.1 mm); Inquire for > 1.50 to 2.00 [1.00 [25.4] 50 - 70 [345 - 483] 65 [448] 23 18

Charpy V-Notch Impact Testing is performed on each plate using mid-thickness, mid-width, transversespecimens tested in accordance with ASTM A673. The producer has the option of testing sub-sizespecimens to any of the combinations of specimen size, energy requirement, and test temperature asshown below:Specimen Size

in .SpecimenSize, mm

MinimumAverage Energy

ft-lb [J]

Minimum SingleValue Energy ft -

lb [J]

Test Temperature F[C]

0.394 x 0.394 10 x 10 30 [41] 25 [34] -40 [-40]

0.295 x 0.394 7.5 x 10 30 [41] 25 [34] -40 [-40]

0.197 x 0.394 5 x 10 30 [41] 25 [34] -40 [-40]

0.295 x 0.394 7.5 x 10 23 [31] 19 [26] -50 [-46]

0.197 x 0.394 5 x 10 15 [20] 13 [18] -80 [-62]

Chemical Composition (Heat Analysis, wt %, max. unless indicated)C Mn P S Si Al,

TotalNi Cr Mo Cu Ti Cb N

, B

2

0.16 1.15-1.60

0.03 0.010 0.05-0.50

0.020-0.060

0.75 0.25 0.08 0.35 0.007-0.02

0.03 0.012 0.0005

1. Manganese up to 1.65 (heat analysis) is permitted at the option of the material manufacturer2. Nitrogen and Boron shall not be intentionally added3. Nitrogen may be 0.013% max., if titanium if 0.010 to 0.012%

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TMCP Structural Steel Product Data Sheet 2012 04 01

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Thickness, t, in. [mm] CEIIW Max Pcm Max CEIIW Typical Pcm Typical

1.5 [40] 0.39 0.22 0.36 0.16

1.5 < t 3.5[40 < t 90]

0.41 0.23 na na

TolerancesThickness, width, and length tolerances for API 2W Grade 50 steel plate are in accordance with therequirements of ASTM A6. The flatness tolerance for as-supplied product is ASTM A6.

Delivery ConditionAPI 2W Grade 50 is supplied in the Thermo-Mechanical Control Processing (TMCP) condition.

Fabrication and Other RecommendationsWeldability: Welding of API 2W Grade 50 shall be performed in accordance with the applicable weldingcode. In the absence of a specified welding code, the following suggested minimum preheat and

interpass temperatures and welding consumables are provided. Special welding consumables andwelding procedures may be required to match the base metal toughness. Low hydrogen practices are

strongly recommended, including the removal of surface moisture.

Welding Process Thickness, in [mm]Minimum Preheat andInterpass Temperature

Consumables

Shielded Metal Arc(SMAW)

Up to 1.5 [38.1] 50oF [10

oC] AWS E7015-X, E7016-X,

E7018-X>1.5 [38.1] to 2.5 [63.5] 150F [65C]

Gas Metal Arc(GMAW)

Up to 1.5 [38.1] 50oF [10

oC]

AWS ER70S-X>1.5 [38.1] to 2.5 [63.5] 150F [65C]

Submerged Arc(SAW)

Up to 1.5 [38.1] 50oF [10

oC]

AWS F7XX-EXXX-XX>1.5 [38.1] to 2.5 [63.5] 150F [65C]

Flux Cored Arc(FCAW) Up to 1.5 [38.1] 50

o

F [10

o

C] AWS E7XTX-X>1.5 [38.1] to 2.5 [63.5] 150F [65C]

Supplementary RequirementsBy agreement between the purchaser and plate manufacturer, the following SupplementaryRequirements may be specified on the purchase order: S1 (Ultrasonic Examination), S2 (NotchToughness Test at Lower Temperature), S3 (Additional Tension Test), S4 (Through-Thickness [Z-Direction] Testing), S5 (Low Sulfur Steel for Improved Through-Thickness Properties), S7 (Low NitrogenContent for Improved Notch Toughness in Strain-Aged Condition), S8 (Strain-Aged Charpy VNotchImpact Tests), S11 Preproduction Qualification, and S12 (Notch Toughness Using Drop Weight), S13(Surface Quality) and S14 (Thickness Tolerance).

Contact InformationFor sales information, please call 877-294-3858 (Southern USA & Mexico), 800-340-5566 (Western andCentral USA), 800-383-9031 (North Central USA), and 888-576-8530 (Northeast USA & Canada) orconsult www.ssab.com.