Alloys 304 (S30400) and 304L (S30403) stainless steels are variations of the 18 percent chromium – 8 percent nickel austenitic alloy, the most familiar and most frequently used alloy in the stainless steel family. 304/L stainless steel has excellent fabrication properties. Its malleability allows it to be easily formed for flaring, bending and coiling. Good machinability and the low sulfur content promotes excellent weldability in applications requiring it. High strength, excellent corrosion resistance and minimized carbon content make Alloy 304 and 304L Stainless Steels useful for applications where welding is required. Uses include architectural mouldings and trim, welded components of chemical, textile, paper, pharmaceutical and chemical industry processing equipment. Other advantages are its resistance to oxidation, excellent formability, ease of fabrication and cleaning, excellent strength to weight ratio and good toughness at cryogenic temperatures For severely corrosive environments, the lower content of Type 304L is preferred because of its greater immunity to intergranular corrosion. Type 304L stainless steel is an extra-low carbon version of the 304 steel alloy. The lower carbon content in 304L minimizes deleterious or harmful carbide precipitation as a result of welding. 304L can, therefore, be used "as welded" in severe corrosion environments, and it eliminates the need for annealing. This grade has slightly lower mechanical properties than the standard 304 grade, but is still widely used thanks to its versatility. Like Type 304 stainless steel, it's commonly used in beer-brewing and wine-making, but also for purposes beyond the food industry such as in chemical containers, mining, and construction. It is ideal for use in metal parts such as nuts and bolts that are exposed to salt water. ASTM A269, ASTM A213 / ASME SA213 (Seamless)

O.D	O.D Toleracne	W.T Tolerance
Inch	mm	%
1/8"	+0.08/-0	+/-10
1/4"	+/-0.10	+/-10
Up to 1/2"	+/-0.13	+/-15
1/2" to 1-1/2" , excl	+/-0.13	+/-10
1-1/2" to 3-1/2" , excl	+/-0.25	+/-10
Note: The tolerance can be negotiated according to the customer's specific requirements

Code	Standard		CHEMICAL COMPOSITION
			C	Si	Mn	P	S	Ni	Cr	Mo	OTHER
304	JIS	SUS 304	0.080 max	1.00 max	2.00 max	0.040 max	0.030 max	8.00-11.00	18.00-20.00	-	-
	AISI	304	0.080 max	1.00 max	2.00 max	0.045 max	0.030 max	8.00-10.50	18,00-20.00	-	-
	ASTM	TP 304	0.080 max	0.75 max	2.00 max	0.040 max	0.030 max	8.00-11.00	18.00-20.00	-	-
	DIN	X5CrNi189 Nr,1,4301	0.070 max	1.00 max	2.00 max	0.045 max	0.030 max	8,50-10.00	17.00-20.00	*	-
304L	JIS	SUS 304L	0.030 max	1.00 max	2.00 max	0.040 max	0.030 max	9,00-13.00	18.00-20.00	-	-
	AISI	304L	0.030 max	1.00 max	2.00 max	0.045 max	0.030 max	8.00-12.00	18.00-20.00	-	-
	ASTM	TP 304L	0.035 max	0.75 max	2.00 max	0.040 max	0.030 max	8,00-13.00	18.00-20.00	-	-
	DIN	X2CrNi189 Nr.1,4306	0.030 max	1.00 max	2.00 max	0.045 max	0.030 max	10.00-12.50	17.00-20.00	*	-

Mechanical Properties
Yield Strength	30 Ksi min
Tensile Strength	75 Ksi min
Elongation(2" min)	35%
Hardness(Rockwell B Scale)	90 HRB max

Maximum allowable pressure(unit: BAR)
Wall Thickness(mm)
		0.89	1.24	1.65	2.11	2.77	3.96	4.78
O.D(mm)	6.35	387	562	770	995
	9.53	249	356	491	646	868
	12.7	183	261	356	468	636
	19.05		170	229	299	403
	25.4		126	169	219	294	436	540
	31.8			134	173	231	340	418
	38.1			111	143	190	279	342
	50.8			83	106	141	205	251