WH80Q Steel Plate for Sale | RFQ Supply

WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate) is a quenched-and-tempered high-strength structural plate (coal supports, machinery, penstocks) grade under Wugang enterprise tech condition WXG301-2008 (WH80Q); related to GB/T 16270 Q690 family practice. This specification page covers grade identity, chemistry, mechanical requirements, related grades, and RFQ practice. Accept material against the ordered edition and the mill test certificate.

Grade Identity and Delivery Condition

WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate) is supplied for projects that name this designation on the purchase order or calculation sheet. Standard delivery condition is Q+T for C/D <=100 mm; >100-120 mm may be controlled-rolled + tempered; E max 60 mm Q+T. Gangsteel supplies export plate and related products with EN 10204 documentation. Do not accept an alternate heat-treatment route unless a written concession changes the specification requirement.

Chemical Composition - Heat Analysis (WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate))

Heat analysis per WXG301-2008 Table 1 for WH80Q. Ceq limits by thickness (e.g. <=50 mm Ceq<=0.50). Confirm mill edition on MTC.

Element / rule	Requirement
C, max	0.18
Si, max	0.50
Mn, max	1.80
P, max	0.020
S, max	0.010
Cr, max	0.80
Ni, max	1.20
Mo, max	0.60
Nb, max	0.07
V, max	0.08
Ti, max	0.03
B, max	0.003

Mechanical Properties (WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate))

Confirm thickness, specimen orientation, and any supplementary impact, UT, or hardness requirements on the PO.

Property	Requirement
Yield Rp0.2, min (t<=50 mm)	685 MPa
Yield Rp0.2, min (50 < t <=100 mm)	665 MPa
Tensile Rm, min (t<=100 mm)	760 MPa
Elongation A, min	14%
Impact KV2 long. (quality D, -20 C)	34 J min
Delivery / HT	Quenched and tempered (see WXG301 thickness rules)

Related / Near-Equivalent Grades

Near-equivalents are for cross-reference only. They are not automatic code substitutes. Substitution requires engineer approval and matching certificate scope.

System	Grade	Note
GB/T 16270	Q690D / Q690E family	Nearest national QT HSLA family - not automatic substitute
EN 10025-6	S690QL family	Approx. strength class - confirm
Mill	WQ690D	Related Wuyang QT designation

Frequently Asked Questions

What is WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate)?

WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate) is a quenched-and-tempered high-strength structural plate (coal supports, machinery, penstocks) under Wugang enterprise tech condition WXG301-2008 (WH80Q); related to GB/T 16270 Q690 family practice. It is ordered when drawings or the calculation sheet name this designation specifically.

What chemical composition applies to WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate)?

Controlled elements and limits are tabulated above from the governing standard. Always verify the heat analysis on the MTC against the ordered edition.

What mechanical properties should buyers expect for WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate)?

Tensile, yield, elongation, and related limits are tabulated above. Design allowables must come from the applicable pressure-vessel or structural code, not from a web summary.

What delivery condition is required for WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate)?

Standard delivery is Q+T for C/D <=100 mm; >100-120 mm may be controlled-rolled + tempered; E max 60 mm Q+T. State it explicitly on the PO. Do not accept an alternate route without a written concession.

How does WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate) differ from near-equivalent grades?

Near-equivalents may differ in carbon or alloy bands, tensile class, impact temperature, or heat treatment. Substitution needs engineering approval and matching certificate scope.

How do I RFQ WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate) from Gangsteel?

Send WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate), thickness x width x length, quantity or tonnage, delivery condition, optional impact/UT/Z tests, EN 10204 3.1 or 3.2, destination, and any dual-mark needs. Gangsteel replies with mill options, lead time, and packing notes.

Ordering and Mill Certificates

State grade WH80Q (Wuyang / Wugang quenched-and-tempered high-strength plate), dimensions, quantity, delivery condition, optional NDT/PMI, and certificate (EN 10204 3.1 standard; 3.2 when third-party inspection is ordered). Gangsteel supplies export plate and related products with mill test certificates. Contact Gangsteel for stock and mill production RFQs.