ASTM A312 Stainless Steel 304 Seamless Pipe

ASTM A312 Stainless Steel 304 Seamless Pipe
ASTM A312 Stainless Steel 304 Seamless Pipe
ASTM A312 Stainless Steel 304 Seamless Pipe
ASTM A312 Stainless Steel 304 Seamless Pipe

ASTM A312 Stainless Steel 304 Seamless Pipe

Seamless pipes are mainly industrial pipes. Decorative pipes are widely used, mainly in the field of decorative welding, but as the decorative stainless steel pipe process is getting better and better, there are also thick wall decorative pipes that will replace some seamless steel pipes

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Product Introduction

304 stainless steel seamless pipe production process:

Has the following production steps:

a, round steel preparation

b. Heating

c, hot rolling perforation

d, cut the head

e, pickling

f, grinding

g, lubrication

h, cold rolling processing

I. Degreasing

j, solution heat treatment

k, straighten

l, cut the tube

m, pickling

n, finished product inspection

STANDARD	UNS	WERKSTOFF NR.	JIS	AFNOR	BS	GOST	EN
SS 304	S30400	1.4301	SUS 304	Z7CN18‐09	304S31	08Х18Н10	X5CrNi18-10

Chemical Composition

SS	304
Ni	8 – 11
Fe	Balance
Cr	18 – 20
C	0.08 max
Si	0.75 max
Mn	2 max
P	0.040 max
S	0.030 max
N	-

Mechanical Properties

Grade	304
Tensile Strength (MPa) min	515
Yield Strength 0.2% Proof (MPa) min	205
Elongation (% in 50mm) min	40
Hardness
Rockwell B (HR B) max	92
Brinell (HB) max	201

Grade Specifications

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
		BS	En	No	Name
304	S30400	304S31	58E	1.4301	X5CrNi18-10	2332	SUS 304

Physical Properties

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (m/m/0C)			Thermal Conductivity (W/m.K)		Specific Heat 0-1000C (J/kg.K)	Electrical Resistivity (n.m)
			0-1000C	0-3150C	0-5380C	at 1000C	at 5000C
304	8000	193	17.2	17.8	18.4	16.2	21.5	500	720