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{"title":"X2CrNi19-11 Steel Forged Blind Pipe Flanges EN 10028-7 1.4306 Blind Flanges","imgUrl":"https:\/\/img.chinax.com\/nimg\/a4\/aa\/6fca8e689f6c718d1249d996d39d-200x200-1\/x2crni19_11_steel_forged_blind_pipe_flanges_en_10028_7_1_4306_blind_flanges.jpg","attrs":{"Steel number":"1.4306","Type":"steel forged blind flanges","Standard":"EN1092-1 Type 01","Material":"X2CrNi19-11"}}
{"title":"(S)A182 F5 F9 F11 F22 F91 Lap Joint Flange Blind Pipe Flanges","imgUrl":"https:\/\/img.chinax.com\/nimg\/59\/eb\/97ced13544a2a210450c05d01cfb-200x200-1\/28s_29a182_f5_f9_f11_f22_f91_lap_joint_flange_blind_pipe_flanges.jpg","attrs":{"Minimum Order Quantity":"1 pcs","Price":"0.3 usd\/pcs","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, ","Supply Ability":"10000 pcs in stock"}}
{"title":"Forged Steel Blind Flange (S)A182 F304H F317L F321H F347H DN50 PN6 Size","imgUrl":"https:\/\/img.chinax.com\/nimg\/8a\/3a\/d31331f0a1989d0637aacdf958ac-200x200-1\/forged_steel_blind_flange_28s_29a182_f304h_f317l_f321h_f347h_dn50_pn6_size.jpg","attrs":{"Minimum Order Quantity":"1 pcs","Price":"0.3 usd\/pcs","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, ","Supply Ability":"10000 pcs in stock"}}
{"title":"(S)A694 F44 \/ 254SMO Blind Pipe Flanges UNS S31254 Forged Steel Flanges","imgUrl":"https:\/\/img.chinax.com\/nimg\/1b\/25\/2283b6fb509aad1fb732f823d99c-200x200-1\/28s_29a694_f44_2f_254smo_blind_pipe_flanges_uns_s31254_forged_steel_flanges.jpg","attrs":{"Minimum Order Quantity":"1 pcs","Price":"0.3 usd\/pcs","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, ","Supply Ability":"10000 pcs in stock"}}
{"title":"DIN 2631 FL\u00c4NSAR EN ASME B16.5 Plan svetsfl\u00e4ns Flanges Typ 01 UNS S32760 (1.4501","imgUrl":"https:\/\/img.chinax.com\/nimg\/1b\/25\/2283b6fb509aad1fb732f823d99c-200x200-1\/din_2631_fl_c3_84nsar_en_asme_b16_5_plan_svetsfl_c3_a4ns_flanges_typ_01_uns_s32760_281_4501_2f_f55_29_steel_blind_pipe_flanges.jpg","attrs":{"Minimum Order Quantity":"1 pcs","Price":"0.3 usd\/pcs","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, ","Supply Ability":"10000 pcs in stock"}}
{"title":"Alloy 825 \/ UNS N08825 Blind Pipe Flanges Steel Forged Flanges EN1092-1 Type 01","imgUrl":"https:\/\/img.chinax.com\/nimg\/d9\/b9\/b157f00929c020e225dca48f09ba-200x200-1\/alloy_825_2f_uns_n08825_blind_pipe_flanges_steel_forged_flanges_en1092_1_type_01.jpg","attrs":{"Material":"Alloy 825 \/ UNS N08825","Standard":"EN1092-1 Type 01","Type":"Blind pipe flanges","name":"steel forged flanges"}}
X1NiCrMoCu2-5-20-5 EN 10222-5 1.4539 X1CrNiMoCu25-20-5 PN Rated Stainless Flanges
Material Overview
Steel grade 1.4439 is an austenitic stainless steel, often known as a high-alloy molybdenum stainless steel (similar to UNS S31726 / X2CrNiMoN17-13-5 in some systems). It's specifically designed for applications requiring excellent pitting and crevice corrosion resistance, particularly in chloride-containing environments such as seawater and chemical processing.
Chemical Composition
Typical chemical composition (weight %):
Element
Content (%)
Carbon (C)
≤ 0.030
Chromium (Cr)
16.5 – 18.5
Nickel (Ni)
12.5 – 14.5
Molybdenum (Mo)
4.5 – 5.0
Nitrogen (N)
0.12 – 0.22
Manganese (Mn)
≤ 2.0
Silicon (Si)
≤ 1.0
Phosphorus (P)
≤ 0.035
Sulfur (S)
≤ 0.015
Iron (Fe)
Balance (the remainder)
Composition Benefits
High chromium content (≈17–18%) provides strong general corrosion and oxidation resistance
High molybdenum content (≈4.5–5%) significantly improves resistance to pitting and crevice corrosion in chloride media compared with standard 316/316L stainless steel
Nitrogen content (≈0.15–0.2%) increases strength and further improves pitting resistance
Low carbon content (≤ 0.03%) minimizes carbide precipitation and helps maintain corrosion resistance after welding
Important Note: Exact composition limits may vary slightly by standard (EN, ASTM, specific mill specifications). For critical design or certification requirements, always verify the applicable material standard or consult the mill test certificate for precise composition ranges.
Best Alloy Engineering Alloy Pipe as s a reference point for excellence in the manufacture and distribution of fittings, piping, bends, forged flanges , clad products and specialties for the upstream, midstream and downstream sectors of oil & gas, thermal and nuclear power generation.
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Best Alloy Engineering Alloy Pipe as s a reference point for excellence in the manufacture and distribution of fittings, piping, bends, forged flanges , clad products and specialties for the upstream, midstream and downstream sectors of oil & gas, thermal and nuclear power generation.
The C...
