GB/T 13401-2025-化学成分表 — 管道助手

GB/T 13401-2025-化学成分表

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材质牌号与化学成分（表 1）

1. 碳素钢

材料等级	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Ni(%)	Cr(%)	Cu(%)
CF370	≤0.20	≤0.35	≤1.40	≤0.045	≤0.045	≤0.30	≤0.30	≤0.30
CF415	≤0.30	≥0.10	0.29~1.06	≤0.035	≤0.035	≤0.40	≤0.40	≤0.40
CF415K	≤0.30	≥0.10	0.29~1.06	≤0.030	≤0.030	≤0.40	≤0.40	≤0.40
CF485	≤0.30	≥0.10	0.29~1.20	≤0.035	≤0.035	≤0.40	≤0.40	≤0.40
CF485K	≤0.30	≥0.10	0.29~1.20	≤0.030	≤0.030	≤0.40	≤0.40	≤0.40

2. 合金钢

材料等级	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Ni(%)	Cr(%)	Mo(%)	V(%)	Cu(%)	其他 (%)
AF11、AF11G	0.05~0.20	0.50~1.00	0.30~0.80	≤0.025	≤0.025	≤0.30	1.00~1.50	0.44~0.65	-	≤0.30	-
AF12、AF12G	0.05~0.20	0.10~0.60	0.30~0.80	≤0.025	≤0.025	≤0.30	0.80~1.25	0.40~0.65	-	≤0.30	-
AF14	0.08~0.15	0.15~0.40	0.40~0.70	≤0.025	≤0.025	≤0.30	0.90~1.20	0.25~0.35	0.15~0.30	≤0.30	-
AF22、AF22G	0.05~0.15	≤0.50	0.30~0.60	≤0.025	≤0.025	≤0.30	1.90~2.60	0.87~1.13	-	≤0.30	-
AF36、AF36G	0.10~0.17	0.25~0.50	0.80~1.20	≤0.030	≤0.025	1.00~1.30	≤0.30	0.25~0.50	≤0.02	0.50~0.80	Nb:0.015~0.045 N:≤0.020 Al:≥0.050
AF5、AF5G	≤0.15	≤0.50	0.30~0.60	≤0.025	≤0.025	≤0.60	4.00~6.00	0.44~0.65	-	≤0.25	-
AF9、AF9G	≤0.15	≤1.00	0.30~0.60	≤0.025	≤0.025	≤0.60	8.00~10.00	0.90~1.10	-	≤0.25	-
AF91	0.08~0.12	0.20~0.50	0.30~0.60	≤0.020	≤0.010	≤0.40	8.00~9.50	0.85~1.10	0.18~0.25	-	Nb:0.06~0.10 N:0.03~0.07 Al:≥0.02 Ti:≥0.01 Zr:≥0.01
AF91G	0.08~0.12	0.20~0.40	0.30~0.50	≤0.020	≤0.005	≤0.20	8.00~9.50	0.85~1.05	0.18~0.25	≤0.10	Nb:0.06~0.10 N:0.035~0.070 Al:≥0.020 N/Al:≥4.0 B:≤0.001 Zr:≤0.01 Ti:≤0.01 As:≤0.010 Sn:≤0.010 Sb:≤0.003 W:≤0.05
AF92	0.07~0.13	≤0.50	0.30~0.60	≤0.020	≤0.010	≤0.40	8.50~9.50	0.30~0.60	0.15~0.25	-	Al:≥0.02 B:0.001~0.006 Nb:0.04~0.09 N:0.030~0.070 Ti:≤0.01, Zr:≤0.01 W:1.50~2.00

3. 低温用钢

材料等级	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Ni(%)	Cr(%)	Mo(%)	V(%)	Cu(%)
LF415K1	≤0.30	≥0.10	0.29~1.06	≤0.025	≤0.020	≤0.40	≤0.40	≤0.15	≤0.08	≤0.40
LF415K2	≤0.30	≥0.10	0.50~1.06	≤0.025	≤0.020	≤0.40	≤0.30	-	-	≤0.40
LF485K2	≤0.30	≥0.10	0.29~1.20	≤0.025	≤0.020	≤0.40	≤0.40	-	-	≤0.40
LF450K3	≤0.15	0.15~0.30	0.30~0.80	≤0.020	≤0.010	3.25~3.75	≤0.30	-	-	≤0.40
LF680K4	≤0.06	≤0.10	0.30~0.80	≤0.015	≤0.010	8.50~9.50	≤0.30	-	-	≤0.40

4. 奥氏体不锈钢

材料等级	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Ni(%)	Cr(%)	Mo(%)	其他 (%)
SF304	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	8.00~11.00	18.00~20.00	-	-
SF304L	≤0.030	≤1.00	≤2.00	≤0.045	≤0.030	8.00~12.00	18.00~20.00	-	-
SF304H	0.04~0.10	≤1.00	≤2.00	≤0.045	≤0.030	8.00~11.00	18.00~20.00	-	-
SF310	≤0.25	≤1.50	≤2.00	≤0.045	≤0.030	19.00~22.00	24.00~26.00	-	-
SF316	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	10.00~14.00	16.00~18.00	2.00~3.00	-
SF316L	≤0.030	≤1.00	≤2.00	≤0.045	≤0.030	10.00~15.00	16.00~18.00	2.00~3.00	-
SF316H	0.04~0.10	≤1.00	≤2.00	≤0.045	≤0.030	10.00~14.00	16.00~18.00	2.00~3.00	-
SF316Ti	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	10.00~14.00	16.00~18.00	2.00~3.00	Ti:5C~0.70
SF317	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	11.00~15.00	18.00~20.00	3.00~4.00	-
SF317L	≤0.030	≤1.00	≤2.00	≤0.045	≤0.030	11.00~15.00	18.00~20.00	3.00~4.00	-
SF321	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	9.00~12.00	17.00~19.00	-	Ti:5C~0.70
SF321H	0.04~0.10	≤1.00	≤2.00	≤0.045	≤0.030	9.00~13.00	17.00~20.00	-	Ti:4C~0.70
SF347	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	9.00~13.00	17.00~20.00	-	Nb:10C~1.10
SF347H	0.04~0.10	≤1.00	≤2.00	≤0.045	≤0.030	9.00~13.00	17.00~20.00	-	Nb:8C~1.10
SF348	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	9.00~13.00	17.00~19.00	-	Nb+Ta:10C~1.10 Ta:≤0.10 Co:≤0.20
SF348H	0.04~0.10	≤1.00	≤2.00	≤0.045	≤0.030	9.00~13.00	17.00~19.00	-	Nb+Ta:8C~1.10 Ta:≤0.10 Co:≤0.20

5. 奥氏体 - 铁素体双相不锈钢

材料等级	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Ni(%)	Cr(%)	Mo(%)	其他 (%)
SF2225	≤0.030	≤1.00	≤2.00	≤0.030	≤0.020	4.50~6.50	21.00~23.00	2.50~3.50	N:0.08~0.20
SF2205	≤0.030	≤1.00	≤2.00	≤0.030	≤0.020	4.50~6.50	22.00~23.00	3.00~3.50	N:0.14~0.20
SF2507	≤0.030	≤0.80	≤1.20	≤0.035	≤0.020	6.00~8.00	24.00~26.00	3.00~5.00	N:0.24~0.32
SF2760	≤0.030	≤1.00	≤1.00	≤0.030	≤0.010	6.00~8.00	24.00~26.00	3.00~4.00	Cu:0.50~1.00 W:0.50~1.00 N:0.20~0.30