Copper – Internal Working Pressure Type L*

Calculated Rated Internal Working Pressure for Copper Tube: Type L*

912775745729 779662636623 722613589577 631537516505 582495475466 494420404395 439373358351 408347334327 364309297291 336285274269 317270259254 304258248243 293249240235 269229220215 251213205201 270230221216 271231222217 253215207203

Nominal or standard size, in inches	Annealed***
Nominal or standard size, in inches	S= 6000 psi 100F	S= 5100 psi 150F	S= 4900 psi 200F	S= 4800 psi 250F
1/4
3/8
1/2
5/8
3/4
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
5
6
8
10
12

714608456 610519389 565481361 495421316 456388291 387330247 344293219 320272204 285242182 263224168 248211159 238202152 230196147 211179135 196167125 212180135 212181136 199169127

Nominal or standard size, in inches	Annealed***
Nominal or standard size, in inches	S= 4700 psi 300F	S= 4000 psi 350F	S= 3000 psi 400F
1/4
3/8
1/2
5/8
3/4
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
5
6
8
10
12

1569156915691569 1341134113411341 1242124212421242 1086108610861086 1002100210021002 850850850850 755755755755 702702702702 625625625625 577577577577 545545545545 522522522522 504504504504 462462462462 431431431431 464464464464 466466466466 435435435435

Nominal or standard size, in inches	Drawn**
Nominal or standard size, in inches	S= 10,300 psi 100F	S= 10,300 psi 150F	S= 10,300 psi 200F	S= 10,300 psi 250F
1/4
3/8
1/2
5/8
3/4
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
5
6
8
10
12

152414781432 130212631224 120611691133 10551023991 972943914 825801776 733711689 682661641 607589570 560544527 529513497 506491476 489474460 449435422 418406393 451437424 452439425 423410397

Nominal or standard size, in inches	Drawn**
Nominal or standard size, in inches	S= 10,000 psi 300F	S= 9,700 psi 350F	S= 9,400 psi 400F
1/4
3/8
1/2
5/8
3/4
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
5
6
8
10
12

* Based on maximum allowable stress in tension (psi) for the indicated temperatures (F).

** When brazing or welding is used to join drawn tube, the corresponding annealed rating must be used.

*** Types M and DWV are not normally available in the annealed temper. Shaded values are provided for guidance when drawn temper tube is brazed or welded. For more information, see Pressure Ratings and Burst Strength.