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astm a335 steel pipe chemical composition:
material |
c |
si |
mn |
p |
s |
mo |
cr |
|
% |
% |
% |
% |
max |
% |
max |
a335 grade p1 |
0.10---0.20 |
0.10---0.50 |
0.30---0.80 |
0.025 |
0.025 |
0.440.65 |
|
a335 grade p5 |
max 0.15 |
max 0.50 |
0.30---0.60 |
0.025 |
0.025 |
0.450.65 |
4.006.00 |
a335 grade p11 |
0.05---0.15 |
0.5---1.0 |
0.30---0.60 |
0.025 |
0.025 |
0.450.65 |
1.001.50 |
a335 grade p12 |
0.05---0.15 |
max 0.50 |
0.30---0.61 |
0.025 |
0.025 |
0.450.65 |
0.801.25 |
a335 grade p22 |
0.05---0.15 |
max 0.50 |
0.30---0.60 |
0.025 |
0.025 |
0.871.13 |
1.902.60 |
astm a335 steel pipe mechanical properties:
material |
tensile n/mm2 |
strength min n/mm2 |
yield %min |
a335 grade p1 |
min380 |
205 |
30 |
a335 grade p5 |
min415 |
205 |
30 |
a335 grade p11 |
min415 |
205 |
30 |
a335 grade p12 |
min415 |
205 |
30 |
a335 grade p22 |
min415 |
205 |
30 |
stm a335 steel pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.
astm a335 grade |
heat treatment type |
normalizing temperature range f [c] |
subcritical annealing or tempering |
p5 (b,c) |
full or isothermal anneal |
|
|
|
normalize and temper |
- |
1250 [675] |
|
subcritical anneal (p5c only) |
- |
1325 - 1375 [715 - 745] |
p9 |
full or isothermal anneal |
|
|
|
normalize and temper |
- |
1250 [675] |
p11 |
full or isothermal anneal |
|
|
|
normalize and temper |
- |
1200 [650] |
p22 |
full or isothermal anneal |
|
|
|
normalize and temper |
- |
1250 [675] |
p91 |
normalize and temper |
1900-1975 [1040 - 1080] |
1350-1470 [730 - 800] |
|
quench and temper |
1900-1975 [1040 - 1080] |
1350-1470 [730 - 800] |
CHEMICAL COMPOSITION
The types of alloy steel covered by the ASTM A335 – ASME SA335 specification are designed with a “P” prefix, from P5 to P92. Grades P11/P22 and P91/92 are typically found in power stations, whereas grade P5 and P9 are more common for application in the petrochemical industry. Grades P9 and P91 are in the list, the more expensive.
ASTM A335 |
UNS |
C≤ |
Mn |
P≤ |
S≤ |
Si≤ |
Cr |
Mo |
P1 |
K11522 |
0.10~0.20 |
0.30~0.80 |
0.025 |
0.025 |
0.10~0.50 |
– |
0.44~0.65 |
P2 |
K11547 |
0.10~0.20 |
0.30~0.61 |
0.025 |
0.025 |
0.10~0.30 |
0.50~0.81 |
0.44~0.65 |
P5 |
K41545 |
0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
4.00~6.00 |
0.44~0.65 |
P5b |
K51545 |
0.15 |
0.30~0.60 |
0.025 |
0.025 |
1.00~2.00 |
4.00~6.00 |
0.44~0.65 |
P5c |
K41245 |
0.12 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
4.00~6.00 |
0.44~0.65 |
P9 |
S50400 |
0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.50~1.00 |
8.00~10.00 |
0.44~0.65 |
P11 |
K11597 |
0.05~0.15 |
0.30~0.61 |
0.025 |
0.025 |
0.50~1.00 |
1.00~1.50 |
0.44~0.65 |
P12 |
K11562 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
0.80~1.25 |
0.44~0.65 |
P15 |
K11578 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
1.15~1.65 |
– |
0.44~0.65 |
P21 |
K31545 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
2.65~3.35 |
0.80~1.60 |
P22 |
K21590 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
1.90~2.60 |
0.87~1.13 |
P91 |
K91560 |
0.08~0.12 |
0.30~0.60 |
0.02 |
0.01 |
0.20~0.50 |
8.00~9.50 |
0.85~1.05 |
P92 |
K92460 |
0.07~0.13 |
0.30~0.60 |
0.02 |
0.01 |
0.5 |
8.50~9.50 |
0.30~0.60 |
MECHANICAL PROPERTIES
A335 Low-Alloy Pipe |
UNS Number |
Yield Strength ksi |
Tensile Strength ksi |
Elongation % |
Rockwell |
Brinell |
P1 |
K11522 |
30 |
55 |
30 |
– |
– |
P2 |
K11547 |
30 |
55 |
30 |
– |
– |
P5 |
K41545 |
40 |
70 |
30 |
– |
207 max |
P9 |
S50400 |
30 |
60 |
30 |
– |
– |
P11 |
K11597 |
30 |
60 |
20 |
– |
– |
P12 |
K11562 |
32 |
60 |
30 |
– |
174 max |
P22 |
K21590 |
30 |
60 |
30 |
– |
– |
P91 |
K91560 |
60 |
85 |
20 |
– |
– |
TESTING REQUIREMENTS
Transverse/longitudinal: tension and flattening, hardness, bend tests- for material that has been heat-treated in batch furnaces, these tests shall be made on the 5% of the pipes from each heat lot number. For smaller lots, one pipe at a minimum has to be tested
ASTM A335 Gr. P91 shall have a hardness of 250 HB / 265 HV (25 HRC)
Hydro testing: shall be applied to every length of pipe
The non-destructive electric test is optional
ربما توجد مئات الطرق المختلفة لتعبئة الأنبوب ، ومعظمها له ميزة ، ولكن هناك مبدآن حيويان لأي طريقة للعمل تمنع الصدأ وأمن النقل البحري. يمكن أن تلبي التعبئة لدينا أي احتياجات للعملاء.
أغطية بلاستيكية توصيل على جانبي نهايات الأنابيب
يجب تجنب ذلك عن طريق تركيب الصلب وتلف النقل
يجب أن تكون العلامات المجمعة موحدة ومتسقة
يجب أن تأتي نفس الحزمة (الدفعة) من الأنابيب الفولاذية من نفس الفرن.
الأنابيب الفولاذية لها نفس رقم الفرن ، نفس الدرجة الفولاذية ، نفس المواصفات.
astm a335 steel pipe chemical composition:
material |
c |
si |
mn |
p |
s |
mo |
cr |
|
% |
% |
% |
% |
max |
% |
max |
a335 grade p1 |
0.10---0.20 |
0.10---0.50 |
0.30---0.80 |
0.025 |
0.025 |
0.440.65 |
|
a335 grade p5 |
max 0.15 |
max 0.50 |
0.30---0.60 |
0.025 |
0.025 |
0.450.65 |
4.006.00 |
a335 grade p11 |
0.05---0.15 |
0.5---1.0 |
0.30---0.60 |
0.025 |
0.025 |
0.450.65 |
1.001.50 |
a335 grade p12 |
0.05---0.15 |
max 0.50 |
0.30---0.61 |
0.025 |
0.025 |
0.450.65 |
0.801.25 |
a335 grade p22 |
0.05---0.15 |
max 0.50 |
0.30---0.60 |
0.025 |
0.025 |
0.871.13 |
1.902.60 |
astm a335 steel pipe mechanical properties:
material |
tensile n/mm2 |
strength min n/mm2 |
yield %min |
a335 grade p1 |
min380 |
205 |
30 |
a335 grade p5 |
min415 |
205 |
30 |
a335 grade p11 |
min415 |
205 |
30 |
a335 grade p12 |
min415 |
205 |
30 |
a335 grade p22 |
min415 |
205 |
30 |
stm a335 steel pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.
astm a335 grade |
heat treatment type |
normalizing temperature range f [c] |
subcritical annealing or tempering |
p5 (b,c) |
full or isothermal anneal |
|
|
|
normalize and temper |
- |
1250 [675] |
|
subcritical anneal (p5c only) |
- |
1325 - 1375 [715 - 745] |
p9 |
full or isothermal anneal |
|
|
|
normalize and temper |
- |
1250 [675] |
p11 |
full or isothermal anneal |
|
|
|
normalize and temper |
- |
1200 [650] |
p22 |
full or isothermal anneal |
|
|
|
normalize and temper |
- |
1250 [675] |
p91 |
normalize and temper |
1900-1975 [1040 - 1080] |
1350-1470 [730 - 800] |
|
quench and temper |
1900-1975 [1040 - 1080] |
1350-1470 [730 - 800] |
CHEMICAL COMPOSITION
The types of alloy steel covered by the ASTM A335 – ASME SA335 specification are designed with a “P” prefix, from P5 to P92. Grades P11/P22 and P91/92 are typically found in power stations, whereas grade P5 and P9 are more common for application in the petrochemical industry. Grades P9 and P91 are in the list, the more expensive.
ASTM A335 |
UNS |
C≤ |
Mn |
P≤ |
S≤ |
Si≤ |
Cr |
Mo |
P1 |
K11522 |
0.10~0.20 |
0.30~0.80 |
0.025 |
0.025 |
0.10~0.50 |
– |
0.44~0.65 |
P2 |
K11547 |
0.10~0.20 |
0.30~0.61 |
0.025 |
0.025 |
0.10~0.30 |
0.50~0.81 |
0.44~0.65 |
P5 |
K41545 |
0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
4.00~6.00 |
0.44~0.65 |
P5b |
K51545 |
0.15 |
0.30~0.60 |
0.025 |
0.025 |
1.00~2.00 |
4.00~6.00 |
0.44~0.65 |
P5c |
K41245 |
0.12 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
4.00~6.00 |
0.44~0.65 |
P9 |
S50400 |
0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.50~1.00 |
8.00~10.00 |
0.44~0.65 |
P11 |
K11597 |
0.05~0.15 |
0.30~0.61 |
0.025 |
0.025 |
0.50~1.00 |
1.00~1.50 |
0.44~0.65 |
P12 |
K11562 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
0.80~1.25 |
0.44~0.65 |
P15 |
K11578 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
1.15~1.65 |
– |
0.44~0.65 |
P21 |
K31545 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
2.65~3.35 |
0.80~1.60 |
P22 |
K21590 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
1.90~2.60 |
0.87~1.13 |
P91 |
K91560 |
0.08~0.12 |
0.30~0.60 |
0.02 |
0.01 |
0.20~0.50 |
8.00~9.50 |
0.85~1.05 |
P92 |
K92460 |
0.07~0.13 |
0.30~0.60 |
0.02 |
0.01 |
0.5 |
8.50~9.50 |
0.30~0.60 |
MECHANICAL PROPERTIES
A335 Low-Alloy Pipe |
UNS Number |
Yield Strength ksi |
Tensile Strength ksi |
Elongation % |
Rockwell |
Brinell |
P1 |
K11522 |
30 |
55 |
30 |
– |
– |
P2 |
K11547 |
30 |
55 |
30 |
– |
– |
P5 |
K41545 |
40 |
70 |
30 |
– |
207 max |
P9 |
S50400 |
30 |
60 |
30 |
– |
– |
P11 |
K11597 |
30 |
60 |
20 |
– |
– |
P12 |
K11562 |
32 |
60 |
30 |
– |
174 max |
P22 |
K21590 |
30 |
60 |
30 |
– |
– |
P91 |
K91560 |
60 |
85 |
20 |
– |
– |
TESTING REQUIREMENTS
Transverse/longitudinal: tension and flattening, hardness, bend tests- for material that has been heat-treated in batch furnaces, these tests shall be made on the 5% of the pipes from each heat lot number. For smaller lots, one pipe at a minimum has to be tested
ASTM A335 Gr. P91 shall have a hardness of 250 HB / 265 HV (25 HRC)
Hydro testing: shall be applied to every length of pipe
The non-destructive electric test is optional
ربما توجد مئات الطرق المختلفة لتعبئة الأنبوب ، ومعظمها له ميزة ، ولكن هناك مبدآن حيويان لأي طريقة للعمل تمنع الصدأ وأمن النقل البحري. يمكن أن تلبي التعبئة لدينا أي احتياجات للعملاء.
أغطية بلاستيكية توصيل على جانبي نهايات الأنابيب
يجب تجنب ذلك عن طريق تركيب الصلب وتلف النقل
يجب أن تكون العلامات المجمعة موحدة ومتسقة
يجب أن تأتي نفس الحزمة (الدفعة) من الأنابيب الفولاذية من نفس الفرن.
الأنابيب الفولاذية لها نفس رقم الفرن ، نفس الدرجة الفولاذية ، نفس المواصفات.