FH32 L34407 F32 - GB 712-2011

Grade	FH32
China ISC	L34407
Old Grade
Corresponding Standard	GB 712-2011 Ship and ocean engineering structural steel
Classification	Alloy Steel

FH32 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	Ti	V	Nb	Al ^ⓓ
Minimum Value	-	-	0.9	-	-	-	-	-	-	-	-	0.05	0.02	0.015
Maximum Value	0.16	0.5	1.6	0.02	0.02	0.2	0.8	0.35	0.08	0.009	0.02	0.1	0.05	-

ⓓ Total aluminum content can be measured instead of acid-soluble aluminum content, in the case, the total aluminum content shall not be less than 0.020%. With the approval of the classification society, other grain refining elements may also be used.
ⓔ Grain refining elements Al, Nb, V, and Ti can be added to the steel individually or in any combination. When added individually, their content shall comply with the provisions of this table; when two or more grain refining elements are added in combination, the lower limit of the grain refining element content in the table shall not apply, and at the same time, it is required that Nb+V+Ti≤0.12%.
ⓕ When aluminum is present in Grade F steel, N≤0.012%.
ⓗ Any other added elements shall be specified in the quality certificate.

FH32 Mechanical Properties

Heat Treatment or Condition	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
450~570	ReH: ≥315	≥22	-60°C: T≤50mm： long. ≥31; tr.≥22 T＞50~70mm： long. ≥38; tr.≥26 T＞70~150mm： long. ≥46; tr.≥31

• T-thickness；long.-longitudual，tr.-transverse；ReH-upper yield strength
• When the yield is not obvious, Rp0.2 can be measured instead of the upper yield strength.

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!