16Mn L20166 - GB 6479-2000

Grade	16Mn
China ISC	L20166
Corresponding Standard	GB 6479-2000 Seamless Steel Tubes for High-Pressure Chemical Fertilizer Equipments
Classification	Alloy Steel

16Mn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr ^①	Ni ^①	Cu ^①
Minimum Value	0.12	0.2	1.2	-	-	-	-	-
Maximum Value	0.2	0.6	1.6	0.03	0.03	0.3	0.3	0.2

16Mn Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
normalizing	490~670	≥320	≥21	KU2 ≥47

• When the final rolling temperature of hot-rolled pipes meets the normalizing temperature, normalizing can be used as a substitute.
• Steel pipes with an outer diameter d≥57mm and a wall thickness T≥14mm shall undergo U-notch impact tests as standard specimens. The evaluation of impact test results shall be in accordance with the provisions of GB/T 17505.
• Except for 12Cr2Mo, for other grades, when the wall thickness T is greater than 16 to 40mm, the yield point is allowed to decrease by 10MPa.

1 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	SS	BS EN/BS
16Mn	SS490B	A441 A633	E355C Fe510C	St52-3U	E36-3	S355J0 Fe510C	1.0553	2132-01 2134-01	50C

2 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	Japan	United States	International Organization for Standardization	Germany		France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	AISI	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
16Mn	SM490 SM490C SS490C	1024 Gr.50type1-4	Fe510D	St52-3 St52-3N	1.0570	E36-3	S355J2(+N) Fe510D1① S355J2G3①	1.0570(dubl)	17G1S 17GS S345	2135-01	50D 50C

3 Approximate Comparison Table Structural Alloy Steel

China	United States
GB	ASTM/AISI
16Mn	A350 LF2

16Mn Corresponding Standards(Same grade name, different standards)

1	GB 6479-2000
	16Mn L20166
2	GB 1591-1988
	16Mn
3	NB /T 47008-2017
	16Mn
4	JB /T 6908-2020
	16Mn

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