作者： admin

E215/E235/E355 – EN 10305-1

Spread the love

EN 10305 – 1 Steel tubes for precision applications – Technical delivery conditions – Part 1: Seamless cold drawn tubes

This Part of EN 10305 specifies the technical delivery conditions for seamless cold drawn steel tubes of circular cross section for precision applications.

Tubes according to this Part of EN 10305 are characterized by having precisely defined tolerances on dimensions and a specified surface roughness. Typical fields of application are in the vehicle, furniture and general engineering industries.

Delivery conditions

Designation Symbol Description
Cold drawn / hard +C No heat treatment after the final cold drawing process.
Cold drawn / soft +LC After the final heat treatmant there is a suitable drawing pass.
Cold drawn and stress relieved +SR After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere.
Annealed +A After the final cold drawing process the tubes are annealed in a controlled atmosphere.
Normalized +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere.
Chemical composition (cast analysis)a
Steel name Steel number C Si Mn P S b Al
max. max. max. max. max. min.
E215 1.0212 0.10 0.05 0.70 0.03 0.03 0.025
E235 1.0308 0.17 0.35 1.20 0.03 0.03 –
E355 c 1.0580 0.22 0.55 1.60 0.03 0.03 –

a Elements not included in this Table(but see footnote c) shall not be intentionally added to the steel without the agreement of the purchaser except for elements which may be added for finishing the cast. All appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steel making process.
b See option 2
c Addition of Nb, Ti and V are permitted at the discretion of the manufucturer. The content of these elements shall be reports.
Option 2: For the steel grades E235 and E355 a controlled sulphur content of 0.015 % to 0.040 % is specified to
support machinability. It shall be obtained by resulphurising the steel after maximum desulphurisation or alternatively by using a low oxygen process.

Mechanical properties at room temperature

Steel grade Minimum values for the delivery condition a,b
Steel name Steel number +C c +LC c +SR +A d +N
Rm Mpa A % Rm Mpa A % Rm Mpa ReH Mpa A % Rm Mpa A % Rm  Mpa ReH e Mpa A %
E215 1.0212 430 8 380 12 380 280 16 280 30 290 to 430 215 30
E235 1.0308 480 6 420 10 420 350 16 315 25 340 to 480 235 25
E355 1.0580 640 4 580 7 580 450 f 10 450 22 490 to 630 355 22

a Rm: tensile strength ; ReH: upper yield strength; A: elongation after fracture.
b 1 MPa = 1 N/mm2.
c Depending on the degree of cold work in the finishing pass the yield strength may nearly be as high as the tensile strength. For calculation purposes the following relationships are recommended:
– for delivery condition +C: ReH ≥ 0.8 Rm;
– for delivery condition +LC: ReH ≥ 0.7 Rm.
d For calculation purposes the following relationship is recommended: ReH ≥ 0.5 Rm.
e For tubes with outside diameter ≤ 30 mm and wall thickness ≤ 3 mm the ReH minimum values are 10 MPa lower than the values given in this Table.
f For tubes with outside diameter > 160 mm: ReH ≥ 420 MPa.

 

ASTM A179

Spread the love

ASTM A179 Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes

This specification covers minimum-wall-thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus.

This specification covers tubes 1/8 to 3 in. [3.2 to 76.2mm], inclusive, in outside diameter.

Ordering Information

  1. Quantity (feet, metres, or number of lengths),
  2. Name of material (seamless tubes),
  3. Manufacture (cold-drawn),
  4. Size (outside diameter and minimum wall thickness),
  5. Length (specific or random),
  6. Optional requirements,
  7. Test report required (Certification Section of Specification A 450/A 450M),
  8. Specification number, and
  9. Special requirements.

Manufacture

Tubes shall be made by the seamless process and shall be cold drawn.

Heat Treatment

Tubes shall be heat treated after the final cold draw pass at a temperature of 1200°F [650°C] or higher.

Chemical Composition

Carbon, %            0.06–0.18

Manganese, %         0.27–0.63

Phosphorus, max, %    0.035

Sulfur, max, %        0.035

Hardness Requirements

The tubes shall have a hardness number not exceeding 72 HRB.

Mechanical Tests Required

Flattening Test – One flattening test shall be made on specimens from each of two tubes from each lot or fraction thereof.

Flaring Test – One flaring test shall be made on specimens from each of two tubes from each lot or fraction thereof.

Hardness Test – Rockwell hardness tests shall be made on specimens from two tubes from each lot.

Hydrostatic Test – Each tube shall be subjected to the hydrostatic test, or, instead of this test, a nondestructive electric test may be used when specified by the purchaser.

ASTM A182 F6NM

Spread the love

ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High Temperature Service

This specification covers forged low alloy and stainless steel piping components for use in pressure systems. Included re flanges, fittings, valves, and similar parts to specified dimensions or to dimensional standards. Several grades of low alloy steels and ferritic, martensitic, austenitic, and ferritic-austenitic stainless steels are included in this specification. Selection will depend upon design and service requirements.

Grade (UNS): F6NM (S41500)  Martensitic Stainless Steel

Heat Treatment

Normalizing at a minimum temperature of 1850 ℉[1010℃] and tempering at 1040 ℉-1120 ℉ [560℃-600℃]

 

Chemical Requirements  Composition, max, %

Elements F6NM (S41500)
Carbon 0.05
Manganese 0.50-1.00
Phosphorus 0.030
Sulfur 0.030
Silicon 0.60
Nickel 3.5-5.5
Chromium 11.5-14.0
Molybdenum 0.50-1.00

 

Tensile and Hardness Requirements

Grade Symbol F6NM (S41500)
Tensile Strength,min, ksi [Mpa] 115[790]
Yield Strength, min,ksi [MPa] 90[620]
Elongation in 2 in.[50 mm] or 4D,min, % 15.0
Reduction of Area, min, % 45.0
Brinell HardnessNumber ≤295

ASTM A743 CA6NM

Spread the love

ASTM A743 – Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

This specification covers iron-chromium and iron-chromium-nickel alloy castings for general corrosion-resistant application. The grades covered by this specification represent Types of alloy castings suitable for broad ranges of application which are intended for a wide variety of corrosion environments.

 

Grade (UNS): CA6NM (J91540)

Process:

The steel shall be made by the electric furnace process with or without separate refining such as argon-oxygen decarburization (AOD).

Heat Treatment:

Heat to 1850°F [1010°C] minimum, air cool to 200°F [95°C] or lower prior to any optional intermediate temper and prior to the final temper. The final temper shall be between 1050°F [565°C] and 1150°F [620°C].

Chemical Requirements: Composition, max,%

Elements CA6NM (J91540)
Carbon 0.06
Manganese 1.00
Silicon 1.00
Phosphorus 0.04
Sulfur 0.03
Chromium 11.5-14.0
Nickel 3.5-4.5
Molybdenum 0.40-1.0

Tensile Requirements: (shall not apply unless specified in the purchase order)

Grade Symbol CA6NM (J91540)
Tensile Strength,min, ksi [Mpa] 110[755]
Yield Strength, min,ksi [MPa] 80[550]
Elongation in 2 in.[50 mm],min, % 15
Reduction of Area,min, % 35

BS EN 10216-2 P195GH P235GH P265GH

Spread the love

BS EN 10216-2 Seamless steel tubes for pressure purposes – Technical delivery conditions – part 2:Non- alloy and alloy steel tubes with specified elevated temperature

This Part of EN10216 specifies the technical delivery conditions in two categories for seamless tubes of circular cross section, with specified elevated temperature properties, made of non-alloy and alloy steel.

Steel Grade: P195GH  Steel Number: 1.0348

Steel Grade: P235GH  Steel Number: 1.0345

Steel Grade: P265GH  Steel Number: 1.0425

Chemical composition (cast analysis)a, in % by mass
Elements P195GH P235GH P265GH
C ≤0.13 ≤0.16 ≤0.20
Si ≤0.35 ≤0.35 ≤0.40
Mn ≤0.70 ≤1.20 ≤1.40
P  max 0.025 0.025 0.025
S  max 0.020 0.020 0.020
Cr ≤0.30 ≤0.30 ≤0.30
Mo ≤0.08 ≤0.08 ≤0.08
Ni ≤0.30 ≤0.30 ≤0.30
Al total ≥0.020 b ≥0.020 b ≥0.020 b
Cu ≤0.30 c ≤0.30 c ≤0.30 c
Nb ≤0.010 d ≤0.010 d ≤0.010 d
Ti  max ≤0.040 ≤0.040 ≤0.040
V ≤0.02 ≤0.02 ≤0.02
Cr+Cu+Mo+Ni ≤0.70 ≤0.70 ≤0.70

a Elements not included in this Table shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be added for finishing the cast. All appropriate measures shall be taken to prevent the addition of undesirable lelments from scrap or other materials used in the steel making process.
b This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements which shall be reported. When using titanlum, the producer shall verify that (Al+Ti/2)≥0.020%.
c Option 2: In order to facilitate subsequent forming operations, an agreed maximum copper content lower than indicated and an agreed specified maximum tin content shall apply.
d The content of these elements need not to be reported unless intentionally added to the cast.

 

Mechanical properties

Steel grade Tensile properties at room temperature Impact properties a b
Upper yield stength or proof strength ReH or RP0.2 for Wall Thickness T min. Tensile Strength Rm Elongation A min. % a Minimum average absorbed energy KV J at a temperature of ℃
T ≤16 16＜T≤40 40＜T≤60 60＜T≤100 l t l t
Mpa Mpa Mpa Mpa Mpa 20 0 -10 20 0
P195GH 195 – – – 320 to 440 27 25 – 40 c 28 d – 27 c
P235GH 235 225 215 – 360 to 500 25 23 – 40 c 28 d – 27 c
P265GH 265 255 245 – 410 to 570 23 21 – 40 c 28 d – 27 c

a l=longitudinal t=transverse
b To be verified when options 4 and 5 are/is specified.
c Option 4: Impact energy shall be verified.
d Option 5: Longitudinal impact energy shall be verified.

ASTM A182 F12

Spread the love

ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

Grade: F12 Class1 and Class2 

Chemical Requirements   max,%

Elements F12 Class1 F12 Class2
Carbon 0.05-0.15 0.10-0.20
Manganese 0.30-0.60 0.30-0.60
Phosphorus 0.045 0.040
Sulfur 0.045 0.040
Silicon 0.50 0.10-0.60
Chromium 0.80-1.25 0.80-1.25
Molybdenum 0.44-0.65 0.44-0.65

 

Tensile and Hardness Requirements

Grade Symbol F12 Class1 F12 Class2
Tensile Strength,min, ksi [Mpa] 60[415] 70[485]
Yield Strength, min,ksi [MPa] 32[220] 40[275]
Elongation in 2 in.[50 mm] or 4D,min, % 20 20
Reduction of Area, min, % 45 30
Brinell HardnessNumber 121-174 143-207

ASTM A182 F11

Spread the love

ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

Grade: F11 Class1, Class2 and Class3

Chemical Requirements   max,%

Elements F11 Class1 F11 Class2 F11 Class3
Carbon 0.05-0.15 0.10-0.20 0.10-0.20
Manganese 0.30-0.60 0.30-0.80 0.30-0.80
Phosphorus 0.030 0.040 0.040
Sulfur 0.030 0.040 0.040
Silicon 0.5-1.0 0.5-1.0 0.5-1.0
Chromium 1.00-1.50 1.00-1.50 1.00-1.50
Molybdenum 0.44-0.65 0.44-0.65 0.44-0.65

 

Tensile and Hardness Requirements

Grade F11 Class1 F11 Class2 F11 Class3
Tensile Strength,min, ksi [Mpa] 60[415] 70[485] 75[515]
Yield Strength, min,ksi [MPa] 30[205] 40[275] 45[310]
Elongation in 2 in.[50 mm] or 4D,min, % 20 20 20
Reduction of Area, min, % 45 30 30
Brinell HardnessNumber 121-174 143-207 156-207

ASTM A182 F91

Spread the love

ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High Temperature Service

Grade: F91

Chemical Requirements   max,%

Elements A182 F91
Carbon 0.08-0.12
Manganese 0.30-0.60
Phosphorus 0.020
Sulfur 0.010
Silicon 0.20-0.50
Nitrogen 0.40
Chromium 8.0-9.5
Molybdenum 0.85–1.05
Columbium 0.06-0.10
Others V: 0.18-0.25
N: 0.03-0.07
Ni 0.40
Al: 0.02
Ti: 0.01
Zr: 0.01

 

Tensile and Hardness Requirements

Grade A 182 F91
Tensile Strength,min, ksi [Mpa] 85[585]
Yield Strength, min,ksi [MPa] 60[415]
Elongation in 2 in.[50 mm] or 4D,min, % 20
Reduction of Area, min, % 40
Brinell HardnessNumber 248 max

ASTM A182 F9

Spread the love

ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High Temperature Service

Grade: F9

Chemical Requirements   max,%

Elements A182 F9
Carbon 0.150
Manganese 0.30-0.60
Phosphorus 0.030
Sulfur 0.030
Silicon 0.50-1.00
Nickel …
Chromium 8.0-10.0
Molybdenum 0.90-1.10

 

Tensile and Hardness Requirements

Grade A 182 F9
Tensile Strength,min, ksi [Mpa] 85[585]
Yield Strength, min,ksi [MPa] 55[380]
Elongation in 2 in.[50 mm] or 4D,min, % 20
Reduction of Area, min, % 40
Brinell HardnessNumber 179-217

ASTM A182 F5

Spread the love

ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High Temperature Service

Grade: F5

Chemical Requirements   max,%

Elements F5
Carbon 0.150
Manganese 0.30-0.60
Phosphorus 0.030
Sulfur 0.030
Silicon 0.50
Nickel 0.50
Chromium 4.0-6.0
Molybdenum 0.44-0.65

 

Tensile and Hardness Requirements

Grade F5
Tensile Strength,min, ksi [Mpa] 70[485]
Yield Strength, min,ksi [MPa] 40[275]
Elongation in 2 in.[50 mm] or 4D,min, % 20
Reduction of Area, min, % 35
Brinell HardnessNumber 143-217