R D36|KR D36 STEEL PLATE

KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-Plate] is a higher-strength shipbuilding plate grade under IACS UR W11 / society rules (ABS/LR/BV/DNV/GL continuity per stamp). 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

KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-Plate] is supplied for projects that name this designation on the purchase order or calculation sheet. Standard delivery condition is N / CR / TM / QT per thickness and society approval; killed and fine grain treated. 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 (KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-Plate])

IACS higher-strength D36 ladle rules; society stamp required for class use. KR D36 / RD36: 355 MPa yield band, impact -20 deg C. KR stamp required.

Element / rule	Requirement
C, max	0.18%
Mn	0.90-1.60% (AH t<=12.5 mm Mn min may be 0.70%)
Si, max	0.50%
P, max	0.035%
S, max	0.035%
Al (acid soluble), min	0.015% (or total Al >=0.020%)
Nb	0.02-0.05% when used (Nb+V+Ti <=0.12%)
V	0.05-0.10% when used
Ti, max	0.02%
Cu, max	0.35%
Cr, max	0.20%
Ni, max	0.40%
Mo, max	0.08%
Deoxidation	Killed and fine grain treated

Mechanical Properties (KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-Plate])

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

Property	Requirement
Yield strength ReH, min	355 MPa
Tensile strength Rm	490-630 MPa
Elongation A5, min	22%
Impact	-20 deg C (typically 34 J long / 24 J trans up to 50 mm)
Delivery	N/CR/TM/QT per thickness and society approval

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
ABS / LR / BV / DNV / NK	DH36 family	Same IACS D36 band
ASTM	A131 Grade DH36	US twin
Related	AH36 / EH36	0 / -40 deg C impact ladder

Frequently Asked Questions

What is KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-Plate]?

KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-Plate] is a higher-strength shipbuilding plate under IACS UR W11 / society rules (ABS/LR/BV/DNV/GL continuity per stamp). It is ordered when drawings or the calculation sheet name this designation specifically.

What chemical composition applies to KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-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 KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-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 KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-Plate]?

Standard delivery is N / CR / TM / QT per thickness and society approval; killed and fine grain treated. State it explicitly on the PO. Do not accept an alternate route without a written concession.

How does KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-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 KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-Plate] from Gangsteel?

Send KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-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 KR Grade D36 / RD36 (IACS higher-strength hull steel) [queue key KR-D36-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.