Power Plant Cold Drawn Steel Pipe Seamless Alloy ASTM A335 P91 6''
SCH XXS
The material P91 is especially suited for steam boiler, boiler
parts, boiler drum, pressure vessel for the apparatus engineering
and similar purposes. It can be used in permanent operation with
wall temperatures up to about 590 °C ~1094 °F+.
Application: Used in hydraulic system, automobile, locomotive and
military industry and manufacturing boiler, reheater, superheater,
heat exchanger, condenser, etc.
1. Standards
ASME SA106 —— American Boiler and Pressure Vessel norms
ASME SA333 —— American Boiler and Pressure Vessel norms
ASME SA335 —— American Boiler and Pressure Vessel norms
DIN17175 —— German industry standards
EN10216-2 —— European pressure piping standards
2. Application
For the low and medium pressure boiler and steam header pipes; for
the high-pressure boiler and steam pipes, and the petrochemical
industry pipes.
3. Steel pipes No. of main production:
SA106B, SA106C, SA333 I, SA333 VI, SA335 P5, SA335 P11, SA335 P12,
SA335P22, SA335 P91, SA335 P92,
4. Size Available
3’’ ~ 6’’ (88.9mm~168.3mm)
5. Mechanical Properties
| Standards | Steel pipes No. | Tensile strength
(Mpa) | Bend strength
(Mpa) | Elongation
(%) | Impact energy
(J) | Hardness |
| ASME SA106 | SA106B | ≥415 | ≥240 | ≥22 | ≥35 | / |
| SA106C | ≥485 | ≥275 | ≥20 | ≥35 | / |
| ASME SA333 | SA333 I | ≥380 | ≥205 | ≥28 | －45≥18 | / |
| SA335 P11 | ASME SA335 | ≥415 | ≥205 | ≥22 | ≥35 | ≤163HB |
| SA335 P12 | ≥415 | ≥220 | ≥22 | ≥35 | ≤163HB |
| SA335 P22 | ≥415 | ≥205 | ≥22 | ≥35 | ≤163HB |
| SA335 P5 | ≥415 | ≥205 | ≥22 | ≥35 | ≤187HB |
| SA335 P91 | 585～760 | ≥415 | ≥20 | ≥35 | ≤250HB |
| SA335 P92 | ≥620 | ≥440 | ≥20 | ≥35 | 250HB |
| DIN17175 | ST45.8/III | 410～530 | ≥255 | ≥21 | ≥27(DVM) | / |
| 15Mo3 | 450～600 | ≥270 | ≥22 | ≥34(DVM) | / |
| 13CrMo44 | 440～590 | ≥290 | ≥22 | ≥34(DVM) | / |
| 10CrMo910 | 480～630 | ≥280 | ≥20 | ≥34(DVM) | / |
| EN10216-2 | 15NiCuMoNb5-6-4 (WB36) | 610～780 | ≥440 | ≥19 | ≥40 | / |
6. Chemical Composition:
| Standards | Steel pipes No. | Chemical composition(%) |
| C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V | Al | W | Cb | N |
| ASME SA106 | SA106B | 0.17~ 0.25 | ≥ 0.1 | 0.70~ 1.00 | ≤0.030 | ≤0.030 | | | | | | | | | |
| SA106C | 0.23~ 0.27 | ≥ 0.1 | 0.70~ 1.00 | ≤0.030 | ≤0.030 | | | | | | | | | |
| ASME SA333 | SA333 I | 0.09~ 0.12 | / | 0.7~ 1.00 | ≤0.020 | ≤0.010 | | | | | | | | | |
| SA333 VI | 0.09~ 0.12 | ≥ 0.1 | 0.9~ 1.10 | ≤0.020 | ≤0.010 | | | | | | | | | |
| ASME SA335 | SA335 P11 | 0.05~ 0.15 | 0.50~ 1.0 | 0.30~ 0.60 | ≤0.030 | ≤0.030 | 1.00~ 1.50 | 0.50~ 1.00 | | | | | | | |
| SA335 P12 | 0.05~ 0.15 | ≤0.50 | 0.30~ 0.61 | ≤0.030 | ≤0.030 | 0.80~ 1.25 | 0.44~ 0.65 | | | | | | | |
| SA335 P22 | 0.05~ 0.15 | ≤0.50 | 0.30~ 0.60 | ≤0.030 | ≤0.030 | 1.90~ 2.60 | 0.87~ 1.13 | | | | | | | |
| SA335 P5 | ≤0.15 | ≤0.50 | 0.30~ 0.60 | ≤0.025 | ≤0.025 | 4.00~ 6.00 | 0.45~ 0.65 | | | | | | | |
| SA335 P91 | 0.08~ 0.12 | 0.20~ 0.50 | 0.30~ 0.60 | ≤0.020 | ≤0.010 | 8.00~ 9.50 | 0.85~ 1.05 | | ≤ 0.40 | 0.18 ~0.25 | ≤ 0.015 | | 0.06~ 0.10 | 0.03~ 0.07 |
| SA335 P92 | 0.07~ 0.13 | ≤0.50 | 0.30~ 0.60 | ≤0.020 | ≤0.010 | 8.50~ 9.50 | 0.30~ 0.60 | | ≤ 0.40 | 0.15~ 0.25 | ≤ 0.015 | 1.50~ 2.00 | 0.04~ 0.09 | 0.03~ 0.07 |
| DIN 17175 | ST45.8/III | ≤0.21 | 0.10~ 0.35 | 0.40~ 1.20 | ≤0.040 | ≤0.040 | ≤0.30 | | | | | | | | |
| 15Mo3 | 0.12~ 0.20 | 0.10~ 0.35 | 0.40~ 0.80 | ≤0.035 | ≤0.035 | | 0.25~ 0.35 | | | | | | | |
| 13CrMo44 | 0.10~ 0.18 | 0.10~ 0.35 | 0.40~ 0.70 | ≤0.035 | ≤0.035 | 0.70~ 1.10 | 0.45~ 0.65 | | | | | | | |
| 10CrMo910 | 0.08~ 0.15 | ≤0.50 | 0.30~ 0.70 | ≤0.025 | ≤0.020 | 2.00~ 2.50 | 0.90~ 1.10 | ≤0.30 | ≤ 0.30 | | ≤ 0.015 | | | |
| EN1021 6-2 | 15NiCuMoNb5-6-4 (WB36) | ≤0.17 | 0.25~ 0.50 | 0.80~ 1.20 | ≤0.025 | ≤0.020 | ≤0.30 | 0.25~ 0.50 | 0.50~ 0.80 | 1.00~ 1.30 | | ≤0.05 | | 0.015~ 0.045 | |
