ASTM A691 Grade 11 22 91 LSAW Steel Pipe
Standard: ASTM A691/ASTM SA691
Grades: CM-65 CM-70 CM-75 CMSH-70CMS-75 CMSH-801/2 CR 1CR 1-1/4 CR 2-1/4 CR 3CR 5CR 9CR 91
Class: Class 10,11,12,13,20,21,22,23,30,31,32,33,40,41,42,43
Size: 1/2"~60"
| Standard |
ASTM A691 |
| Dimensions |
ASME/ ANSI B36.10 / 19 |
| Standard Size |
1/2" NB to 60" NB (ERW,EFW,LSAW, SSAW, HSAW) |
| Wall Thickness |
3-12mm |
| Available Shapes |
Round, Half Round, Square, Rectangular or Custom shape |
| Length |
3 to Max18 Meters or custom |
| Pipe End |
Beveled End, Plain End, Treaded |
| Test Certificate |
EN 10204 3.1 B |
ASTM A691 91 PLATE MATERIAL
| Pipe Grade |
Type of Steel |
ASTM Specification |
HB, max A |
| |
|
Number |
Grade |
|
| CM-65 |
carbon-molybdenum steel |
A 204/ A204M |
A |
201 |
| CM-70 |
carbon-molybdenum steel |
A 204/ A204M |
B |
201 |
| CM-75 |
carbon-molybdenum steel |
A 204/ A204M |
C |
201 |
| CMSH-70 |
carbon-manganese-silicon steel, normalized |
A 537/A 537M |
1 |
|
| CMS-75 |
carbon-manganese-silicon steel |
A 299/A 299M |
… |
… |
| CMSH-80 |
carbon-manganese-silicon steel, quenched and tempered |
A 537/A 537M |
2 |
|
| 1/2 CR |
1/2 % chromium, 1/2 % molybdenum steel |
A 387/ A 387M |
2 |
201 |
| 1CR |
1 % chromium, 1/2 % molybdenum steel |
A 387/ A 387M |
12 |
201 |
| 1-1/4 CR |
1-1/4 % chromium, 1/2 % molybdenum steel |
A 387/ A 387M |
11 |
201 |
| 2-1/4 CR |
2-1/2 % chromium, 1 % molybdenum steel |
A 387/ A 387M |
22 |
201 |
| 3CR |
3 % chromium, 1 % molybdenum steel |
A 387/ A 387M |
21 |
201 |
| 5CR |
5 % chromium, 1/2 % molybdenum steel |
A 387/ A 387M |
5 |
225 |
| 9CR |
9 % chromium, 1 % molybdenum steel |
A 387/ A 387M |
9 |
241 |
| 91 |
91 % chromium, 1 % molybdenum steel |
A 387/ A 387M |
91 |
241 |
ASTM A691 91 Alloy Steel EFW Pipe heat treatment parameters
| Pipe Grade |
ASTM Specification |
Post-Weld Heat-Treat Temperature Range (Strees Relieving), F ( C) |
Normalizing Temperature, max unless otherwise noted, F ( C) |
Quenching Temperature, max unless otherwise noted, F ( C) |
Tempering Temperature, min, F ( C) |
| CM-65 |
A204/ A204M |
1100 to 1200 (590 to 650) |
1700 (925) |
… |
… |
| CM-70 |
A204/ A204M |
1100 to 1200 (590 to 650) |
1701 (925) |
… |
… |
| CM-75 |
A204/ A204M |
1100 to 1200 (590 to 650) |
1702 (925) |
… |
… |
| CMSH-70 |
A537/A 537M |
1100 to 1200 (590 to 650) |
1703 (925) |
… |
… |
| CMS-75 |
A 299/A 299M |
1100 to 1200 (590 to 650) |
1704 (925) |
… |
… |
| CMSH-80 |
A537/A 537M |
1100 to 1200 (590 to 650) |
A |
1700 (925) |
1100 to 1250 (590 to 675) |
| 1/2 CR |
A387 / A387M |
1100 to 1300 (590 to 705) |
180 (1010) |
1700 (925) |
1150 to 1375 (620 to 745) |
| 1CR |
A387 / A387M |
1100 to 1350 (590 to 730) |
181 (1010) |
1700 (925) |
1150 to 1375 (620 to 745) |
| 1-1/4 CR |
A387 / A387M |
1100 to 1375 (590 to 745) |
182 (1010) |
1700 (925) |
1150 to 1375 (620 to 745) |
| 2-1/4 CR |
A387 / A387M |
1200 to 1400 (650 to 760) |
183 (1010) |
1700 (925) |
1250 to1400 (675 to 760) |
| 3CR |
A387 / A387M |
1200 to 1400 (650 to 760) |
184 (1010) |
1700 (925) |
1250 to1400 (675 to 760) |
| 5CR |
A387 / A387M |
1200 to 1400 (650 to 760) |
185 (1010) |
1700 (925) |
1300 to 1400 (705 to 760) |
| 9CR |
A387 / A387M |
1325 to 1375 (715 to 745) |
B |
… |
1325 to 1375 (715 to 745) |
| 91 |
A387 / A387M |
1350 to 1420 (730 to 770) |
1350 to 1420 (730 to 770) |
1900 min (1040 min) |
1350 to 1440 (730 to 780) |
ASTM A691 Gr CC65 Cl 22 S2 Mechanical Characteristics differences
| Grades |
Yield Strength (N/mm2) |
Tensile Properties (N/mm2) |
Elongation (%) |
Welding point tensile strength (N/mm2) |
| -/A45 |
-/165 |
-/310~450 |
-/30 |
-/310~450 |
| -/A50 |
-/185 |
-/345~485 |
-/28 |
-/345~485 |
| CA55 / A55 |
205 |
380~515 |
27 |
380~515 |
| -/B55 |
-/205 |
-/380~515 |
-/27 |
-/380~515 |
| CB60 / B60 |
220 |
415~550 |
25 |
415~550 |
| CB65 / B65 |
240 |
450~585 |
23 |
450~585 |
| CB70 / C70 |
260 |
485~620 |
21 |
485~620 |
| -/C55 |
-/205 |
-/380~515 |
-/27 |
-/380~515 |
| CC60/ C60 |
220 |
415~550 |
25 |
415~550 |
| CC65 / C65 |
240 |
450~585 |
23 |
450~585 |
| CC70 / C70 |
260 |
485~620 |
21 |
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