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DIN 17175-79 Seamless Steel Tubes

DIN 17175-79 Seamless Steel Tubes

Use for elevated temperatures

Description

This standard applies to seamless tubes 1) including tubes for headers of heat-resistant steels according to Table 1 which are used in the construction of boilers, pipe-lines, pressure vessels and equipment for service up to 600∩ and at simultaneous high pressures, where the tototal stress and the relevant scaling conditions can raise or lower the temperature limit.

Chemical composition 


GradeMtg.processchemical composition %
CSiMnP(max)S(max)NiCrMoothers
St35.8S0.17max0.10-0.350.40-0.800.0400.040---
St45.8S0.21max0.10-0.350.40-1.200.0400.040---
17Mn4S0.14-0.200.20-0.400.90-1.200.0400.040-0.30-
19Mn5S0.17-0.220.30-0.601.00-1.300.0400.040-0.30-
15Mo3S0.12-0.200.10-0.350.40-0.800.0350.035--0.25-0.35
13CrMo910S0.10-0.180.10-0.350.40-0.700.0350.035-0.70-1.100.45-0.65
10CrMo910S0.08-0.150.50max0.40-0.700.0350.035-2.00-2.500.90-1.20
14MoV63S0.10-0.180.10-0.350.40-0.700.0350.035-0.30-0.600.50-0.70V:0.22-0.32
X20CrMoV121S0.17-0.230.50max0.40-0.700.0300.0300.30-0.8010.00-12.500.80-1.20V:0.25-0.35

Mechnical properites


Grademateria number
Tensile Test MPa

Remarks

(similiar to JIS)

possibility temperature
Min Yield point

Tensile strength


t 16max16<t 40max
St35.81.0305235225360-480

impact test at room temp.kg

f(STPT38)


St45.81.0405-245410-53023.5(STPT410,STB410)
17Mn41.0481-275460-58022.58
19Mn51.0482-315510-61023.5(STB52)
15Mo31.5415275275450-60023.5
13CrMo9101.7335295295440-59023.2(STPA22,STBA22)
10CrMo9101.7380285285450-60023.2(STPA24,STBA24)
14MoV63
1.7715325325460-61024.2
X20CrMoV1211.4922490490690-85023.5


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