Steel equivalents / Pressure vessel steel plate (A516 Gr 70 / P265GH-P355GH / SGV480)

SGV480

KRApproximate match

KS · KS D3540

Family of fine-grain, killed carbon steel plates used to fabricate pressure vessels, boilers, separators and petrochemical equipment operating at moderate temperature (generally -30°C to roughly 400-500°C depending on grade). It's the most common plate family in industrial boilermaking, offering an excellent strength/weldability balance.

Equivalents by yield strength proximity

Grade	Region	Standard	Re (MPa)	Rm (MPa)	Delta
SGV480	KR	KS D3540	265	480–590	reference
P265GH (n° matière 1.0425)	EU	EN 10028-2	265	410–530	0%
SGV480	JP	JIS G3118	265	480–610	0%
A516 Grade 70	US	ASTM A516/A516M (ASME SA-516)	260	485–620	-2%
Neighboring grades — different strength
P355GH (n° matière 1.0473)	EU	EN 10028-2	355	470–650	+34%

Chemical composition (wt%)

Grade	C	Mn	Si	P	S	Cr	Ni	Mo	Cu	Nb	V	Ti	N	Al
SGV480	≤0.27	0.85–1.2	0.15–0.4	≤0.03	≤0.03	—	—	—	—	—	—	—	—	—
P265GH (n° matière 1.0425)	≤0.2	0.8–1.4	≤0.4	≤0.025	≤0.015	≤0.3	≤0.3	≤0.08	≤0.3	—	—	—	—	—
SGV480	≤0.27	0.85–1.2	0.15–0.3	≤0.035	≤0.035	—	—	—	—	—	—	—	—	—
A516 Grade 70	≤0.28	0.85–1.2	0.15–0.4	≤0.035	≤0.035	—	—	—	—	—	—	—	—	—
P355GH (n° matière 1.0473)	0.1–0.22	1.1–1.7	≤0.6	≤0.025	≤0.015	≤0.3	≤0.3	≤0.08	≤0.3	≤0.02	≤0.02	≤0.03	≤0.012	≥0.02

Note: Correction: the initially suggested designation (KS D3560) is incorrect for this family — KS D3560 is actually the Korean standard "carbon steel and molybdenum alloy steel plates for boilers and pressure vessels" (grades SB410/SB450/SB480), equivalent to JIS G3103 (SB series), not JIS G3118 (SGV series). The Korean standard actually equivalent to JIS G3118/SGV480 is KS D3540 ("carbon steel plates for intermediate and moderate temperature pressure vessels"), which directly reuses the Japanese SGV410/450/480 nomenclature with nearly identical composition.

Values compiled from public sources for guidance only — always verify against the official standard before use in design or fabrication.