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General Metallic Materials of ASME Pressure Piping Code 4

Code	Grade	Chemical Composition %, max									Mechanical Requirement
Code	Grade	C	Si	Mn	P	S	Cr	Ni	Mo	Other	T.S. min MPa	Y.S. min MPa	EL. min %	HB max	Other
ASTM A 387/ ASME SA 38726)	5	0.15	0.55	0.25-0.66	0.035	0.030	3.90-6.10	-	0.40-0.70	-	415-585 (515-690)	205 (310)	18	-	Z >= 40%
	9	0.15	1.05	0.25-0.66	0.030	0.030	7.90-10.10	-	0.85-1.15	-	415-585 (515-690)	205 (310)	18	-	Z >= 40%
	91	0.06-0.15	0.18-0.56	0.25-0.66	0.025	0.012	7.90-9.60	0.43	0.80-1.10	V:0.16-0.27 Nb:0.05-0.11 N:0.025-0.080 AI:0.02;Ti:0.01 Zr:0.01	585-760	415	18	-	-
	11	0.04-0.17	0.44-0.86	0.35-0.73	0.035	0.035	0.94-1.56	-	0.40-0.70	-	415-585 (515-690)	240 (310)	22	-	-
	12	0.04-0.17	0.13-0.45	0.35-0.73	0.035	0.035	0.74-1.21	-	0.40-0.65	-	380-550 (450-585)	230 (275)	22	-	-
	22	0.04-0.15	0.50	0.25-0.66	0.035	0.035	1.88-2.62	-	0.85-1.15	-	415-585 (515-690)	205 (310)	18	-	Z >= 40%
ASTM A 403/ ASME SA 403	WP304	0.08	1.00	2.00	0.045	0.030	18.0-20.0	8.0-11.0	-	-	515	205	28	-	-
	WP304H	0.04-0.10	1.00	2.00	0.045	0.030	18.0-20.0	8.0-11.0	-	-	515	205	28	-	-
	WP304L	0.030	1.00	2.00	0.045	0.030	18.0-20.0	8.0-12.0	-	-	485	170	28	-	-
	WP316	0.08	1.00	2.00	0.045	0.030	16.0-18.0	10.0-14.0	2.00-3.00	-	515	205	28	-	-
	WP316H	0.04-0.10	1.00	2.00	0.045	0.030	16.0-18.0	10.0-14.0	2.00-3.00	-	515	205	28	-	-
	WP316L	0.030	1.00	2.00	0.045	0.030	16.0-18.0	10.0-14.0	2.00-3.00	-	485	170	28	-	-
	WP321	0.08	1.00	2.00	0.045	0.030	17.0-19.0	9.0-12.0	-	Ti:5(C+N2)-0.70	515	205	28	-	-
	WP321H	0.04-0.10	1.00	2.00	0.045	0.030	17.0-19.0	9.0-12.0	-	Ti:4(C+N2)-0.70	515	205	28	-	-
	WP347	0.08	1.00	2.00	0.045	0.030	17.0-19.0	9.0-12.0	-	Nb:10C-1.10	515	205	28	-	-
	WP347H	0.04-0.10	1.00	2.00	0.045	0.030	17.0-19.0	9.0-12.0	-	Nb:8C-1.10	515	205	28	-	-
ASTM A 420/ ASME SA 42025)	WPL6 21)	0.30	0.15-0.40	0.50-1.35	0.035	0.040	0.30	0.40	0.12	Cu:0.40;V:0.08, Nb:0.02	415-655	240	22	-	-
	WPL9	0.20	-	0.40-1.06	0.030	0.030	-	1.60-2.24	-	Cu:0.75-1.25	435-610	315	20	-	-
	WPL3 22)	0.20	0.13-0.37	0.31-0.64	0.05	0.05	-	3.2-3.8	-	-	450-620	240	22	-	-
	WPL8 23)	0.13	0.13-0.37	0.90	0.030	0.030	-	8.4-9.6	-	-	690-865	515	16	-	-
ASTM A 515/ ASME SA 515	65 24)	0.28	0.13-0.45	0.98	0.035	0.035	-	-	-	-	450-585	240	23	-	-
ASTM A 515/ ASME SA 515	70 24)	0.31	0.13-0.45	1.30	0.035	0.035	-	-	-	-	485-620	260	21	-	-
ASTM A 516/ ASME SA 516	6524)	0.24	0.13-0.45	0.79-1.30	0.035	0.035	-	-	-	-	450-585	240	23	-	-
ASTM A 516/ ASME SA 516	70 24)	0.27	0.13-0.45	0.79-1.30	0.035	0.035	-	-	-	-	485-620	260	21	-	-
ASTM A 815/ ASME SA815	S31803	0.030	1.0	2.00	0.030	0.020	21.0-23.0	4.5-6.5	2.5-3.5	N:0.08-0.20	620	450	20	290	-
ASTM A 815/ ASME SA815	S32205	0.030	1.00	2.00	0.030	0.020	22.0-23.0	4.5-6.5	3.0-3.5	N:0.14-0.20	655	450	20	290	-

NOTE:
21) Per agreement, the content of Nb may be 0.05 % during heat analysis and 0.06% during product analysis.
22) Fittings made from plates or forgings shall have Mn Max.0.90 %.
23) Fittings made from plates shall have Mn Max 0.98 %.
24) The contents of C and Mn may vary with the different thickness, please refer the relevant standards.
25) As for the impact test temperature and the test properties,please refer the relevant standards.
26) Because of the different Class,the plates’properties are different, refer the standards.