Professional High Temperature DIN17175 St35.8 St45.8 seamless Carbon Steel Boiler Tube

Professional High Temperature DIN17175 St35.8 St45.8 seamless Carbon Steel Boiler Tube

Standard: DIN17175
Steel Grade: St35.8, St45.8
Size: OD (10-219mm) x WT (1-30mm)
Application: For high, middle, low pressure boiler and pressure purpose

Delivery Condition:
Annealed, Normalized, Normalized and Tempered

Inspection and Test:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength, Yield Strength,
Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, No-destructive Test, Hydrostatic Test.

Surface treatment:
Oil-dip, Varnish, black painted

Chemical Composition:
STANDARD GRADE CHEMICAL COMPOSITION
C Si Mn P,S Cr Mo
DIN 17175 St35.8 ≤0.17 0.10-0.35 0.40-0.80 ≤0.030 / /
St45.8 ≤0.21 0.10-0.35 0.40-1.20 ≤0.030 / /
15Mo3 0.12-0.20 0.10-0.35 0.40-0.80 ≤0.030 / 0.25-0.35
13CrMo44 0.10-0.18 0.10-0.35 0.40-0.70 ≤0.030 0.70-1.10 0.45-0.65
10CrMo910 0.08-0.15 ≤0.50 0.40-0.70 ≤0.030 2.00-2.50 0.90-1.20

Mechanical Property:
STANDARD GRADE Tensile Strength(Mpa) Yield Strength(Mpa) Elongation (%)
DIN 17175 St35.8 360-480 ≥235 ≥25
St45.8 410-530 ≥255 ≥21
15Mo3 450-600 ≥270 ≥20
13CrMo44 440-590 ≥290 ≥20
10CrMo910 450-600 ≥280 ≥18

For detailed information, please just contact us at nancyyang at ruichengsteel dot cn.