ANSI B16.5 ASTM A403 WP304L Class 300 Steel flanges

Flange Items:

Weld Neck Flange, Slip On Flange, Steel Pipe Flange,

Threaded Flange, Integral Pipe Flange, Socket Weld Flange,

Blind Flange, Orifice Flange, Reducing Flange,

Loose Hubbed Flange, Welding plate Flange, Welding Neck Collar,

Stub End, Spectacle Blind Flange/ 8 Figure Blind Flange.

Material:

A181-60;

A105; A350 LF2,LF3;

A694 F42,46,52,56,60,65,70;

A182 F5,9,11,12,22,91;

A182 F304(H),F304L, F316(H),F316L, F321(H),F347(H),F310

A182 F51, A276 S31803, A479

Flange faces:

Raised Face (RF), Flat Face (FF), Ring-Type Joint (RTJ),Tongue-and-Groove (T&G),Male-and-Female (M&F)

Flange face finish:

Stock Finish, Spiral Serrated,Concentric Serrated,Smooth Finish

Pressure Classes of Flanges:

 Class150 300 400 600 900 1500 2500

Size: 1/8"--42"

Chemical Requirements (Composition, %, max)

Material Symbol	C	Mn	P	S	Si	Ni	Cr	Mo	Cu	N	V	Co
ASTM A105	0.35	0.60-1.05	0.035	0.040	0.10-0.35	0.40	0.30	0.12	0.40	_	0.08	_
ASTM A350 LF2	0.30	0.60-1.35	0.035	0.040	0.15-0.30	0.40	0.30	0.12	0.40	_	0.08	0.02
ASTM A182 F304	0.08	2.00	0.045	0.030	1.00	8.0-11.0	18.0-20.0	_	_	_	_	_
ASTM A182 F304L	0.03	2.00	0.045	0.030	1.00	8.0-13.0	18.0-20.0	_	_	_	_	_
ASTM A182 F316	0.08	2.00	0.045	0.030	1.00	10.0-14.0	16.0-18.0	2.00-3.00	_	_	_	_
ASTM A182 F316L	0.03	2.00	0.045	0.030	1.00	10.0-15.0	16.0-18.0	2.00-3.00	_	_	_	_
ASTM A182 F321	0.08	2.00	0.045	0.030	1.00	9.0-12.0	17.0-19.0	_	_	_	_	_
EN 10025 S235JR	0.20	1.40	0.045	0.045	_	_	_	_	_	0.009	_	_
20Mn	0.17-0.23	0.70-1.00	0.035	0.035	0.17-0.37	0.30	0.25		0.25
20	0.17-0.23	0.60-1.00	0.030	0.020	0.17-0.37	0.25	0.25		0.25
16Mn	0.13-0.19	1.20-1.60	0.030	0.020	0.20-0.60	0.30	0.30		0.25

Mechanical Requirements

Material Symbol	Tensile Strength, min, MPa	Yield point, min, Mpa	Elongation, min, %	Reduction of area, min, %	Hardness, max, HB	Min. Impact Average, J	Test Temperature, °C
ASTM A105	485	250	22	30	187
ASTM A350 LF2	485-655	250	22	30		20	-46
ASTM A182 F304	515	205	30	50
ASTM A182 F304L	485	170	30	50
ASTM A182 F316	515	205	30	50
ASTM A182 F316L	485	170	30	50
ASTM A182 F321	515	205	30	50
20Mn	450	275	24	50	197
20	410	245	25	55	156