Nace Mr0175 Seamless Pipe

Carbon Steel Pipe Nace Mr0175 Stockist, Exporter of ISO 15156 2 Nace Mr0175

BS En Iso 15156-2 Material, Nace Mr0175 Carbon Steel Tube Suppliers

Nace Mr0175 Seamless Pipe

Nace Mr0175 Seamless Pipe

Carbon Steel Pipe Nace Mr0175

Carbon Steel Pipe Nace Mr0175

ISO 15156-2 Material

ISO 15156-2 Material

Tycoon Piping is one of the leading exporter & suppliers for high quality Nace Mr0175 Seamless Pipe. NACE was established since 1943, full form is National Association of Corrosion Engineers. MR0175 is the standard of material requirements for H2S containing gas and oil production and equipment. NACE MR0175/ISO 15156 provides similar rules, gives requirements and suggestions to select qualified steel materials, that served in equipment utilized in gas and oil production and in natural gas sweetening plants in H2S-containing environments. NACE MR0175/ISO 15156 are resistant to crackings, such as:

  • Hydrogen-induced craking
  • Sulfide stress cracking (SSC)
  • Galvanically induced hydrogen stress cracking.
  • Stepwise cracking
  • Soft zone cracking
  • Stress-oriented hydrogen-induced cracking
  • Stress corrosion cracking

Carbon Steel Pipe Nace Mr0175 Chemical Composition has limits for substance Sulfur (S ≤ 0.002%), Phosphorus (P ≤ 0.020%) and Carbon (C ≤ 0.10%). The NACE MR0175 Specification need to prevent SSC in downhole environments, piping systems, storage batteries, desulphurization systems and so on which take the material upto the fence of the refinery. For the year range between 1975 and 2003, many engineers extend the MR0175 concepts and applied them to the refinery situation (along with the help of RP0472, which even preceded MR0175 and addresses welding relateds and H2S cracking in refineries).

Table of content

Nace Mr0175 Chemical composition

Chemical composition %
Maximum Carbon 0.21
Manganese 1.00
Silicon 0.40
Sulphur 0.003
Phosphorous 0.015
Copper 0.35
Oxygen 0.002
Nickel 0.30
Chromium 0.20
Molybdenum 0.20

List of Equivalent of NACE MR0175

NACE MR0175/ISO 15156-1 is applicable to materials used for the following equipment Permitted exclusions
Drilling, well construction and well servicing equipment
  • Equipment only exposed to drilling fluids of controlled composition a
  • Drill bits
  • Blowout preventer (BOP) shear blades b
  • Drilling riser systems
  • Work strings
  • Wire line and wire line equipment c
  • Surface and intermediate casing
Wells, including subsurface equipment, gas lift equipment, wellheads and christmas trees

Sucker rod pumps and sucker rodsd

Electrical submersible pumps

Other artificial lift equipment


Flowlines, gathering Crude oil storage and handling facilities operating at gauge pressure below 4,3 bar (65 psi)
Sour-water handling equipment -
Natural gas treatment plants -
Transportation pipelines for liquids, gases and multiphase fluids Lines handling gas prepared for domestic use
  • Given the high strength often needed, drilling equipment may not comply with the requirements of this part of NACE MR0175/ISO 15156. In such cases the primary means for avoiding SSC is control of the drilling or well-servicing environment. As service stresses and material hardness increase, drilling fluid control becomes increasingly important. Take care to control the drilling environment by maintenance of drilling fluid hydrostatic head and fluid density to minimize formation fluid in-flow and by one or more of the following procedures:
    • maintenance of pH 10 or higher to neutralize H2S in the drilled formation;
    • use of chemical sulfide scavengers;
    • use of a drilling fluid in which oil is the continuous phase.
  • High strength steels used for blowout preventer (BOP) shear blades are highly susceptible to SSC.
  • Wireline lubricators and lubricator connecting devices shall comply.
  • NACE Standard MR0176 applies to sucker rod pumps and sucker rods.

SSC Cracking factors

Sulfide Stress cracking affected by following factors

  • Subjected by chemical ingredients, hot treatment and micro structural etc. Influences metallurgy conditions and strength.
  • Hydrogen iron concentration in aqueous phase (Ph index)
  • H2S partial pressure, that is H2S concentration and the overall absolute pressure ratio.
  • Total tensile stress
  • Temperature
  • Exposure time to acid environment
  • Power storage effect
  • Chloride or other halide ions concentration
  • Oxidizing agent
  • Non-secondary fluid (including fluid used for acid excitation and packers)

Nace Mr0175 Chemical analysis

The chemical analysis (ladle) of forgings shall be within the following limits (all values inpercent, by weight):

C Mn P S Nb V CE (IIW)
< 0.20 < 1.30 < 0.020 < 0.015 ≤ 0.005 ≤ 0.0051 ≤ 0.420

ISO 15156-2 Chemical Composition

Sulfur Phosphorus Carbon
S ≤ 0.002% P ≤ 0.020% C ≤ 0.10%

MR 0175 Requirements

Steel Type Grades Included                                  Comments                                                                                         
Ferritic 405,430, 409, 434, 436, 442, 444, 445, 446, 447, 448 Hardness up  to 22 HRC
Martensitic 410, 420 Hardness up to 22 HRC
Martensitic F6NM Hardness up to 23 HRC
Martensitic S41425 Hardness up to 28 HRC
Austenitic 201, 202, 302, 304, 304L, 305, 309, 310, 316, 316L, 317, 321, 347, S31254(254SMO), N08904(904L), N08926(1925hMo) Solution annealed, no cold work to enhance properties, hardness up to 22 HRC
Austenitic S20910 Hardness up to 35 HRC
Duplex  S31803 (1.4462), S32520 (UR 52N+), S32750 (2507), S32760 (Zeron 100), S32550(Ferralium 255) PREN >30 solution annealed condition, ferrite content 35% to 65%, or 30 to 70% in welds. Note that the general restriction of 28 HRC in previous editions is not found in this latest edition of the standard. There is a specific restriction on HIP'd S31803 to 25HRC. For some applications cold worked material is allowed up to 36HRC

Precipitation Hardening

17-4 PH 33 HRC Age hardening at 620 deg C
Precipitation Hardening 
S45000 31 HRC Age hardening at 620 deg C
Precipitation Hardening S66286 35 HRC