ASTM A709 Grade 50S Steel Shape| A709 Gr.50S Bridge Shape Steel supplier

ASTM A709 Grade 50S, also searched as A709 Gr.50S, A709GR50S, A709-50S, A709 Gr 50S, A709 50S W-shape and A709 Grade 50S 50ksi, is the 50 ksi shape grade in ASTM A709/A709M. That book covers structural steel for bridges. Grade 50S is built on A992/A992M. It is rolled as W-shapes and tees, not as a standard plate grade.

A709 Grade 50 is the plate twin on A572-50 chemistry. Grade 50S is the shape twin on A992 chemistry. A certificate that only says A992 is not an A709 Grade 50S member unless the purchase order also meets A709 toughness and identification. QST 50 and QST 50S are A913 quenched-and-self-tempered shape grades. They are not Grade 50S.

Do not treat 50S as A572 Gr.50 plate. Do not treat it as A36. Do not treat it as Grade 50W. 50W is weathering plate. A709 says HPS 70W and HPS 100W shall not be substituted for Grade 50S. Grade 50W and HPS 50W shall not be substituted for Grade 50S without agreement. Do not treat A709 as a pressure-vessel product. That work sits on ASTM A516 or pressure vessel steel plates.

General requirements follow A6/A6M. Yield is 50 ksi / 345 MPa min, with an A992 cap near 65 ksi. Tensile is 65 ksi / 450 MPa min. Density is 7.85 g/cm³.

SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). We source A709 Gr.50S / A992 shapes from first-line Chinese mills, print heat and product analysis when ordered, record the impact zone when named, and ship sections to fabricators in the United States, Europe, the Middle East, Southeast Asia, Africa and South America.

Related category pages: structural steel plates, ASTM A572 A572M structural steel plates, carbon steel plates and high strength low alloy plates.

Nearby pages that buyers compare, but must not swap blindly, include A572 Gr.50, A572 Gr.55, EN 10025-2 S355JR and JIS G3106 SM490A.

Grade 50S chemistry follows A992. Heat analysis is the mill table. Product analysis, when ordered, follows A6 product tolerances on that heat.

Heat Analysis and Product Analysis — ASTM A709 Grade 50S (A992 basis)

A709 often tightens phosphorus and sulfur on bridge files. If the purchase order writes product analysis, SHH STEEL prints both columns.

Do not treat this chemistry as Grade 50W. 50W needs copper and chromium for a patina. Do not treat it as QST 50. QST 50 follows A913. Do not treat it as S355JR unless both books are met.

Buyers search A709 Gr.50S mechanical properties, A709GR50S yield, A709 50S A992 and A709-50S tensile.

Tensile Properties — ASTM A709 Grade 50S / A992 shapes

The A992 yield cap and the 0.85 ratio are why Grade 50S is not a free swap with every 50 ksi plate. Toughness is the A709 extra. Write non-FCM or FCM, zone and temperature. A silent A992 heat is not an FCM shape.

Density is 7.85 g/cm³.

There is no official one-to-one worldwide twin for A709 Gr.50S. What buyers compare is a 345 MPa painted structural shape with an A992 yield cap.

In the United States the chemistry twin is A992. The plate twin inside A709 is Grade 50. QST 50 / QST 50S are A913 routes.

In Europe compare S355JR, S355J0 and S355J2 sections. See EN 10025-2. Fine-grain comparisons sit on EN 10025-3 S355N.

In Japan compare SM490A, SM490B and SM490C. In China compare GB/T 1591 Q355B / Q355C / Q355D sections. Dual mark only when both books are fully met.

Buyers pick A709 Gr.50S when a painted W-beam, stringer or tee wants 50 ksi yield, an A992 yield cap and an A709 stamp. Search phrases such as A709GR50S, A709 Grade 50S, A709-50S and A709 50S A992 all point here.

It is the wrong product for a plate girder web. That work is A709 Grade 50 plate. It is the wrong product for an unpainted weathering girder. That work is Grade 50W. It is the wrong product for a 70 ksi HPS flange. That work is HPS 70W plate. It is the wrong product for a pressure vessel. That work is A516 Grade 70.

SHH STEEL will ask for the section size (W12×, W14×, W16×, W18×, W21×, W24×, W27×, W30×, W36× and tees) before rolling.

ASTM A709 Grade 50S is weldable HSLA shape steel. Treat welding as bridge production welding when the member is FCM.

Typical consumables are AWS A5.1 E7018 or matching GMAW / SAW wires qualified on a 50 ksi A992 family. A procedure written for A992 is the usual starting point. A procedure written for Grade 50W must account for copper and chromium. A procedure written for A36 is under-matched on the yield cap discussion.

Preheat follows flange thickness and hydrogen control. The fabricator owns the WPS. SHH STEEL can share mill heat data, product analysis and CEV for that review.

Usual delivery from SHH STEEL for A709 Gr.50S is as-rolled A992 shapes. QST is a different grade name.

Do not order Grade 50S as QT A514 or as HPS 100W. The certificate lists ASTM A709 Grade 50S and A992 when dual-marked; heat number; heat analysis and product analysis when ordered; tensile to the 50 ksi A992 table; impact zone when ordered. Certificates may be EN 10204 3.1 or EN 10204 3.2.

Usual supply from SHH STEEL for A709 Gr.50S bridge shape steel:

• Product form: W-shapes and structural tees
• Depth range: common W12 to W36, other depths by enquiry
• Length: 6 m – 18 m, longer by enquiry

Plate girders and splice plates stay on the Grade 50 plate page. Browse related plate sizes on structural steel plates, ASTM A572 plates and the products index.

Dimensional limits for ASTM A709 Grade 50S follow A6 / A6M shape tolerances unless the purchase order names another table.

Flange width, depth, web thickness, out-of-square and camber follow the A6 W-shape tables. Length is commonly held to +50 / 0 mm or the A6 plus tolerance. Straightness follows A6 unless a tighter bridge extra is written. SHH STEEL will not assume a plate-thickness extra on a W-shape order.

Grade 50S already defines the A992 50 ksi table. Extra items still have to be written on the purchase order.

Book name. Write ASTM A709 Grade 50S. Write A992 only as a dual mark.

Section size. Write the W or tee designation.

Impact zone. Write non-FCM or FCM, zone and temperature.

Product analysis. Write it if the file needs the second chemistry column.

NDE. UT on flanges when named.

Identification and stamping. Heat number, A709 Grade 50S, size and mill logo.

Third-party witness. EN 10204 3.2 with SGS, TÜV, BV, ABS or the inspector named.

A709 Grade 50S is the product for a painted 50 ksi shape file. It is the wrong product for a plate-girder web. That work is Grade 50 plate. It is the wrong product for a QT 100 ksi flange. That work sits on A514 Grade Q or HPS 100W.

worldwide terms. Partner mills include Angang, Shougang, Maanshan, Laigang, Rizhao, Baotou and other qualified mills when the size requires it. Plate partners such as Wuyang, Hanye, Xinyu and Xingcheng cover A709 plate grades on the same project.

Mill test certificates are issued to EN 10204 3.1 as standard. EN 10204 3.2 is arranged when the order names a third-party hold point. Dual marking to A992 is the usual route.

Usual rolling: common W12–W36 depths, 12 m stock lengths, cut-to-length on request.

Processing: cutting, coping, drill, blast and paint, UT on flanges when named.

Trade terms: FOB Shanghai main, CIF destination available. Payment: TT, LC, or TT + LC.

Ocean time from Shanghai: US West 14–18 days; US Gulf 28–35 days; Rotterdam / Antwerp 28–35 days; Jebel Ali 18–25 days; Singapore 7–12 days; other ports quoted.

Third-party: SGS, TÜV, BV, ABS, CCS, GL, VL, DNV, RINA, NK, KR, or the inspector named.

SHH STEEL is a global steel mill sourcing partner with mill partnerships in China. We supply ASTM, ASME, EN, DIN, JIS and GB steel to buyers in the United States, Europe, the Middle East, Southeast Asia, Africa and South America. Origin is mill-direct, China origin.

SHH STEEL has supplied steel products to the USA, Mexico, Argentina, Peru, El Salvador, Spain, Netherlands, Germany, UAE, Saudi Arabia, South Africa, India, Thailand, Singapore, Vietnam, the Philippines, Japan and Korea.

Typical lead time: ex-stock 5–7 days when the section is in yard; standard rolling about 30–45 days; impact zone or 3.2 inspection about 45–60 days.

SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). For A709 Grade 50S that means mill-direct section price, not a multi-layer stockist mark-up. Grade 50S is a high-volume A992 family. First-line mills keep common W-depths in regular rolling, so the unit price stays competitive and the heat can still carry the A709 impact zone.

Delivery is short when the size is in range: ex-stock 5–7 days, standard heat about 30–45 days, 3.2 inspection about 45–60 days. Coping, drill, blast and paint can run in the same window. FOB Shanghai is the main term; CIF to US West, US Gulf, Rotterdam, Jebel Ali and Singapore is quoted on the same file.

Experience on this grade is simple: print A709 Grade 50S and A992, keep the yield cap, and do not ship Grade 50 plate as a W-shape. We will not skip the impact zone on an FCM order, will not stamp 50W chemistry as 50S, and will not treat A709 as warehouse A36. If the file is a plate girder, we will move the inquiry to Grade 50 plate and keep the price on the right product.

ASTM A709 Grade 50S Steel is 50 ksi / 345 MPa painted bridge shape steel built on A992, with A709 toughness when ordered. Whether the inquiry says ASTM A709 Grade 50S, A709 Gr.50S, A709GR50S, A709-50S, A709 50S A992 or A709 Grade 50S 50ksi, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies W-shapes and tees with Grade 50S chemistry, heat and product analysis as ordered, and EN 10204 3.1 or 3.2 certification.

SHH STEEL supplies ASTM A709 Grade 50S / A709 Gr.50S Bridge Shape Steel to the United States, Europe, the Middle East, Africa, Asia and the Americas for work that actually names this grade.

Contact SHH STEEL for mill rolling, dual A992 marking, FCM impact, cutting, blast, 3.2 inspection or a worldwide quotation.

ASTM A709 Grade 50S Steel, A709 Gr.50S, A709GR50S, A992 bridge shape, A709 50S W-shape, A709 Grade 50S supplier, SHH STEEL