ASTM SA335 Alloy Steel Boiler Tubes Supplier AGICO Steel

ASTM SA335

SA335 is a kind of martensite high alloy steel with high temperature and high pressure resistance. It is generally applied in the high temperature and high pressure main pipes of power plant.

ASTM SA335 Boiler Pipe Name: ASTM SA335 Alloy Steel Boiler Tubes
Size(mm): O.D.: 28-168; W.T.: 2∼30; L: max 12000
Description:
  • Standards: ASTM A335 (ASME SA335)
  • Applications: Wide applications for high temperature services in boilers, superheaters and heat exchangers etc.
  • Specifications: Diameter 320 to 127 mm; Thickness: 0.4 to 12.7 mm; Length: 6 m and above; and other specifications for different customers requirements.

Mechnical Properties:
Standard Steel Code Tensile Strength(MPa) Yield Strength(MPa) Elongation Percent(% Impact Power(J)
SA335 P11 ≥415 ≥205 ≥22 ≥35 ≤163HB
SA335 P12 ≥415 ≥220 ≥22 ≥35 ≤163HB
SA335 P22 ≥415 ≥205 ≥22 ≥35 ≤163HB
SA335 P5 ≥415 ≥205 ≥22 ≥35 ≤187HB
SA335 P91 585∼760 ≥415 ≥20 ≥35 ≤250HB
SA335 P92 ≥620 ≥440 ≥20 ≥35 ≤250HB

Chemical Component
Standard Steel Code Chemical Component(%)
C Si Mn P S Cr Mo Cu Ni V Al W Nb N
ASME
SA335
SA335 P11 0.05∼
0.15
0.50∼
1.0
0.30∼
0.60
≤0.030 ≤0.030 1.00∼
1.50
0.50∼
1.00
             
SA335 P12 0.05∼
0.15
≤0.50 0.30∼
0.61
≤0.030 ≤0.030 0.80∼
1.25
0.44∼
0.65
             
SA335 P22 0.05∼
0.15
≤0.50 0.30∼
0.60
≤0.030 ≤0.030 1.90∼
2.60
0.87∼
1.13
             
SA335 P5 ≤0.15 ≤0.50 0.30∼
0.60
≤0.030 ≤0.030 4.00/6.00 0.45/0.65              
SA335 P91 0.08∼
0.12
0.20∼
0.50
0.30∼
0.60
≤0.020 ≤0.010 8.00∼
9.50
0.85∼
1.05
  ≤0.40 0.18∼
0.25
≤0.015   0.06∼ 0.10 0.03∼ 0.07
SA335 P92 0.07∼
0.13
≤0.50 0.30∼
0.60
≤0.020 ≤0.010 8.50∼
9.50
0.30∼
0.60
B0.001 0.006 ≤0.40 0.15∼
0.25
≤0.015 1.50∼ 2.00 0.04∼ 0.09 0.03∼ 0.07

Specifications:
Type of Steel Pipes OD(D) WT(S)
Cold Drawn Steel Pipe OD(mm) Tolerance (mm) Wall Thickness(mm) Tolerance (mm)
>30∼50 ±0.3 >3∼20 ±10%
>114∼159 ±0.8% ≤30 ±10%
>159∼219 ±1.0%
Hot Rolled Steel Pipe >219∼457 ±1.0% ≤20 10%, 12.5%
>20∼40 10%, 10%