Theoretical Bursting Pressures - Chicago Tube & Iron

STAINLESS STEEL TUBING

Table for Determing Theoretical Bursting Pressures

OD, In.	B.W.G. In.	24 0.022	22 0.028	20 0.035	18 0.049	16 0.065	14 0.083	13 0.095	12 0.109	11 0.120	10 0.134	9 0.148	8 0.165
1/4		1750	2250	2800	3900	5200
5/16		1400	1800	2250	3150	4150
3/8		1200	1500	1850	2600	3450
1/2		900	1100	1400	1950	2600	3300	3800
5/8		700	900	1100	1550	2100	2650	3050
3/4		600	750	950	1300	1750	2200	2550	2900
7/8		500	650	800	1100	1500	1900	2150	2500
1		450	550	700	1000	1300	1650	1900	2200	2400
1-1/8			500	600	850	1150	1500	1700	1950	2150
1-1/4			450	550	800	1050	1350	1500	1750	1900	2150
1-1/2			350	450	650	850	1100	1250	1450	1600	1800
1-3/4			300	400	500	750	950	1100	1250	1350	1550
2			300	350	500	650	850	950	1100	1200	1350	1500
2-1/4				300	450	600	750	850	950	1050	1200	1300
2-1/2				300	400	500	650	750	850	950	1050	1200	1300
2-3/4				250	350	450	600	700	800	850	1000	1100	1200
3				250	350	450	550	650	750	800	900	1000	1100
3-1/4						450	500	600	650	750	800	900	1000
3-1/2						350	450	550	600	700	750	850	950
3-3/4						350	450	500	600	650	700	800	900
4						300	400	500	550	600	650	750	800
4-1/4						300	400	450	500	550	650	700	800
4-1/2						300	350	400	500	550	600	650	750
4-3/4						250	350	400	450	500	550	600	700
5						250	350	400	450	500	550	600	650
NOTE: Above pressures are calculated to nearest 50 psi.

Based on Barlow’s formula with a unit fiber stress of 10,000 psi

Example:

For Type 304 Stainless Tubing with an ultimate strength of 85,000 psi.
Multiply figures on table by 8.5.

Based on formula P=2f(t/D)

(tensile)
f – Fiber stress in pounds per square inch
D – Outside diameter in inches
P – Pressure in pounds per square inch
t – Thickness of wall in inches

NOTE: To compute safe working pressures, above burst pressures should be divided by your desired safety factor