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{"title":"Stainless Steel Seamless Pipe ASTM A312 TP304, Oil and Gas Usage","imgUrl":"https:\/\/img.chinax.com\/nimg\/d7\/6a\/ce7addeaf145b837804b99d07cf3-200x200-1\/stainless_steel_seamless_pipe_astm_a312_tp304_2c_oil_and_gas_usage.jpg","attrs":{"Place of Origin":"China","Brand Name":"YUHONG","Certification":"ABS, GL, DNV, NK, PED, AD2000, CCS, ISO 9001-2008","Minimum Order Quantity":"100KGS"}}
The ASTM A312 S30815 Seamless Pipe, commonly known as 253MA or EN 1.4835, is a premium-grade, heat-resistant austenitic stainless steel pipe engineered for extreme high-temperature service. This cost-effective solution bridges the gap between standard stainless steels and expensive nickel-based alloys.
This alloy is uniquely micro-alloyed with Nitrogen (N) and rare earth elements (Cerium), which are key to its superior performance. Nitrogen enhances creep strength and stabilizes the austenitic structure, while cerium dramatically improves oxidation resistance. 253MA seamless pipes offer exceptional high-temperature performance with very high oxidation resistance, excellent creep rupture strength, and good corrosion resistance in most gaseous atmospheres at elevated temperatures.
Designed for use in pressurized applications up to 900°C (1652°F) and for non-pressurized components at temperatures as high as 1150°C (2102°F).
Standard Specifications & Compliance
This seamless pipe is manufactured in full compliance with international standard ASTM A312/A312M, conforming to specific grade S30815.
253MA is a "lean" austenitic stainless steel with a balanced chemical composition that delivers outstanding high-temperature properties despite relatively lower chromium and nickel content compared to other heat-resistant alloys.
Exceptional High-Temperature Strength: Maintains high tensile and yield strength, as well as excellent creep and rupture strength at temperatures from 850°C to 1100°C
Superior Oxidation Resistance: Synergistic effect of silicon and rare earth elements forms a stable, protective oxide layer, providing scaling resistance up to 1150°C
Good Fabricability: Satisfactory weldability using all common methods, good formability, and adequate machinability
Cost-Effective Performance: Provides performance comparable to high-alloy steels and nickel-base alloys with significant economic advantage
Chemical Composition (Weight %)
The following table details the alloying elements that define the S30815/253MA material's properties:
Element
Composition Range (%)
Key Role
Carbon (C)
0.05 - 0.10
Strengthener; enhances high-temperature strength
Manganese (Mn)
0.80
Aids in deoxidation during steelmaking
Phosphorus (P)
0.040
Impurity element (controlled at low levels)
Sulfur (S)
0.030
Impurity element (controlled at low levels)
Silicon (Si)
1.40 - 2.00
Improves oxidation and scaling resistance
Chromium (Cr)
20.00 - 22.00
Provides basic corrosion & oxidation resistance
Nickel (Ni)
10.00 - 12.00
Stabilizes the austenitic structure for toughness
Nitrogen (N)
0.14 - 0.20
Crucial: Greatly improves creep strength and solid solution strengthening
Cerium (Ce)
0.03 - 0.08
Crucial: Rare earth element that dramatically improves adhesion of the protective oxide scale
Mechanical & Physical Properties
The pipes are supplied in a solution-annealed condition (typically 1050°C/1920°F, followed by rapid cooling) to achieve optimal properties.
Typical Room Temperature Mechanical Properties:
Property
Metric Unit
Imperial Unit
Tensile Strength (Rm)
600 MPa
87 ksi
Yield Strength (Rp0.2)
310 MPa
45 ksi
Elongation (A)
35%
35%
Important Note on High-Temperature Performance: The key advantage of 253MA is its retained strength at high temperatures. Its short-term tensile strength at elevated temperatures can be over 20% higher than that of common stainless steels like 304 or 310S.
Primary Application Scenarios
ASTM A312 S30815 seamless pipes are specified for demanding high-temperature environments across heavy industry, where reliability under thermal cycling and corrosive atmospheres is critical.
Metallurgy & Steel Production: Components in sintering plants, blast furnaces, melting furnaces, continuous casting equipment, rolling mill heating furnaces, and heat treatment furnaces
Mineral Processing & Cement Manufacturing: Equipment for calcining, roasting, and high-temperature material handling in cement kilns and mineral processing plants
Thermal Processing: Radiant tubes, muffles, retorts, and other furnace accessories and internals exposed to temperatures above 900°C
Power Generation & Chemical Processing: High-temperature ducting, piping, and supports in waste incineration, heat recovery, and catalytic cracking systems
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
