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ALLOY STEEL CHROME MOLY PIPE 13CrMo4-5 – 13 CrMo 4-5 – 13CrMo4-4 – 13 CrMo 4-4 – 1.7335 SMLS PIPE

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Alloy Steel Chrome Moly Pipe 13CrMo44 or 13CrMo4-5 smls pipe Chemical Analysis

13crmo44 chemical composition

Standards Steel Grades
Chemical Composition %
C: Mn: Si: P: S: Cr: Mo: Ni: V: Ti: Cu: W: Al: N:
PN 15HM
0.11 – 0.18 0.4 – 0.7 0.15 – 0.35 <0.04 <0.04 0.7 – 1.0 0.40 – 0.55 <0.35 – – <0.25 – <0.02 –
EN 13CrMo4-5 – 13 CrMo 4-5 – 13CrMo4-4 – 13 CrMo 4-4 – 1.7335
0.08 – 0.18 0.4 – 1.0 <0.35 <0.025 <0.01 0.70 – 1.15 0.4 – 0.6 – – – <0.30 – – <0.012
ISO 14CrMo4-5 – 14 CrMo 4-5
0.10 – 0.18 0.4 – 0.7 <0.40 <0.025 <0.015 0.80 – 1.15 0.4 – 0.6 – – – – – – –
EN 13CrMoSi5-5 – 13 CrMoSi 5-5 – 1.7336
<0.17 0.40 – 0.65 0.50 – 0.80 <0.015 <0.005 1.00 – 1.50 0.45 – 0.65 <0.3 – – <0.3 – – <0.012
AFNOR 15CD4.05 – 15CD4 – 15 CD 4.05
<0.18 0.4 – 0.8 0.15 – 0.35 <0.035 <0.035 0.8 – 1.2 0.4 – 0.6 <0.3 – – – – – –
GOST 15ChM – 15KhM – 15ХМ
0.11 – 0.18 0.40 – 0.70 0.17 – 0.37 <0.035 <0.035 0.80 – 1.10 0.40 – 0.55 <0.3 <0.05 <0.03 <0.3 <0.2 – <0.2
ASTM A182 Grade F11 class 2 and 3 – SA182 F11 class 2 and 3 – UNS K11572
0.1 – 0.2 0.3 – 0.8 0.5 – 1.0 <0.040 <0.040 1.0 – 1.5 0.44 – 0.65 – – – – – – –
ASTM A182 Grade F12 class 1 – SA182 F12 class 1 – UNS K11562
0.05 – 0.15 0.3 – 0.61 <0.5 <0.045 <0.045 0.8 – 1.25 0.44 – 0.65 – – – – – – –
UNS UNS K12062
<0.20 0.3 – 0.8 <0.6 <0.045 <0.045 0.80 – 1.25 0.44 – 0.65 – – – – – – –

DIN 1.7335 Seamless Tube Mechanical Strength Table

Standard Grade Mechanical properties
Tensile Strength (Mpa) Yield Strength (Mpa) Elongation (%)
DIN17175 St 35.8 360-480 ≥235 ≥25
St 45.8 410-530 ≥255 ≥21
15Mo3 450-600 ≥270 ≥22
13CrMo44 440-580 ≥290 ≥22
10CrMo910 450-600 ≥280 ≥20

13crmo44 Equivalent

Grade Standard Country Application
13CrMo44KW ONORM Austria
Austrian structural steel
13CrMo44 DIN Germany
Steel plates and strips for pressure purposes; part 2: unalloyed and alloyed steels with specified elevated temperature properties
EN FeF11 EN Euronorm
Euronorm Structural steel

13crmo44 High Pressure Steel Pipe Temprature Range

Properties (MPa) Temperatures
450℃ 460℃ 470℃ 480℃ 490℃ 500℃ 510℃ 520℃ 530℃ 540℃ 550℃ 560℃ 570℃
Rz/10000 363 337 311 284 257 230 201 172 147 125 103 86 73
Rz/100000 284 251 220 190 163 137 116 94 77 61 49 40 33
Rz/200000 260 226 196 167 139 115 96 76 62 47 38 31 25
R1/10000 221 203 186 171 155 141 127 112 98 83 69 54 39
R1/100000 191 172 152 133 116 98 83 70 57 46 36 30 24

Surface treatment of 13crmo4-5 pipe

Antirust oil-dip, Varnish, Passivation, Phosphating, Shot Blasting

Testing of 13crmo44 Seamless Alloy Steel Tubes

  • Tensile test
  • Notch impact/bending test
  • Ring test
  • Non-destructive test
  • Visual inspection of tube surface
  • Gauging
  • Leakage test
  • Grade identification test
  • Hot tensile test

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