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You are here: Home » Products » Steel Tube Application » Gas Spring & Shock Absorber Steel Tube » Din2391 Astm a179 cold rolled steel tube with nice Mechanical properties price list
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Din2391 Astm a179 cold rolled steel tube with nice Mechanical properties price list

Alloy seamless steel tube with high performance,because high content of Cr material is included .

  • RAY STEEL TUBE
  • 10#(ST35.8),20# (St45.8),45#(1045)
  • OD:10-65 mm , Thickness: 1-8 mm
  • Cold rolled
Quantity:

Shock absorber using high quality raw material ST35, ST37,ST37.4,ST52.4 cold rolled craft.

Main features: high precision, excellent brightness,high cleanness inner surface.

The tolearnce for OD & ID :+/-0.05mm or +/-0.03mm

                                        Or +/-0.1 or according to your requirments

Normal standard: GB/T 3639, DIN2391,EN10305-1,EN10305-4, JIS G3445,ASTM A106 etc.

Major Steel Grade: 10#,20#,45#,16Mn,ST35,ST45,ST52,ST34.4,ST52.4,E235,E355 etc.

Delivery Condition: NBK(+N),BK(+C), GBK(+A),BKW(+LC),BKS(+SR)

Application: It is used for hydraulic and pneumatic pressure lines, automotive fuel lines and other usages which have high requirements for size precision , surface cleaness, tensile strength, mecahnical peformance and other special requirements.


Dimension tolerance comparision Chart
 Outside Diameter     GB/T 3639           DIN2391(EN10305)     RAY  steel tube            standard   Special standard   
       6-30mm       +/-0.1 mm           +/-0.08 mm      +/-0.05 mm       +/-0.03 mm
      31-40mm       +/-0.15 mm           +/-0.15 mm      +/-0.05 mm       +/-0.03 mm
      41-50mm       +/-0.20 mm           +/-0.20 mm      +/-0.05 mm       +/-0.03 mm
      51-60mm       +/-0.25 mm           +/-0.25 mm      +/-0.08 mm       +/-0.03 mm
      61-65mm       +/-0.30 mm           +/-0.30 mm      +/-0.10 mm       +/-0.05 mm
     Thickness       +/-0.12 mm           +/-0.10 mm      +/-0.05 mm       +/-0.03 mm


Chemical composition comparison Sheet:

Steel Grade  C  Si  Mn  S  P Cr     Ni Cu
10 0.08-0.13 0.15-0.35 0.30-0.60 ≤0.030 ≤0.030 ≤0.20 ≤0.25 ≤0.25
1010 0.08-0.13 0.15-0.35 0.30-0.60 ≤0.050 ≤0.040 ≤0.20 ≤0.25 ≤0.25
STKM11A ≤0.12 ≤0.35 ≤0.60 ≤0.040 ≤0.040


S10C 0.08-0.13 0.15-0.35 0.30-0.60 ≤0.030 ≤0.030 ≤0.20 ≤0.20 ≤0.30
DC011.0330 ≤0.12
≤0.60 ≤0.045 ≤0.045


C10C1.0214 0.08-0.12 ≤0.10 0.30-0.50 ≤0.025 ≤0.025 AL0.020~0.060
Гост10  0.07-0.14 0.17-0.37 0.35-0.65 ≤0.035 ≤0.040 ≤0.15

A106 Gr.A ≤0.25 ≤0.10 0.27-0.93 ≤0.035 ≤0.035 ≤0.40 ≤0.40 ≤0.40
St37 ≤0.17 0.17-0.37 0.35-0.65 ≤0.020 ≤0.025 ≤0.25 ≤0.25 ≤0.20
St35 ≤0.17 ≤0.35 ≤0.40 ≤0.025 ≤0.025


E215 ≤0.10 ≤0.05 0.7 ≤0.025 ≤0.025


20 0.17-0.23 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 ≤0.25 ≤0.30
STKM12A ≤0.20 ≤0.35 ≤0.60 ≤0.20 ≤0.040 ≤0.040

STKM12B
STKM12C
STKM13A ≤0.25 ≤0.35 0.30-0.90 ≤0.20 ≤0.040 ≤0.040

STKM13B

STKM13C

1020 0.18-0.23
0.30-0.60 ≤0.050 ≤0.040


S20C 0.18-0.23 0.15-0.35 0.30-0.60 ≤0.030 ≤0.030 ≤0.20 ≤0.20 ≤0.20
C22    1.0402 0.17-0.24 ≤0.40 0.40-0.70 ≤0.045 ≤0.045 ≤0.40 ≤0.40
C20C 1.0411  0.18-0.22 ≤0.10 0.7-0.9 ≤0.025 ≤0.025


Гост           20 0.17-0.24 0.17-0.37 0.35-0.65 ≤0.035 ≤0.040 ≤0.025 ≤0.030 ≤0.030
A106Gr.B ≤0.25 ≤0.10 0.29-1.06 ≤0.035 ≤0.035 ≤0.40 ≤0.40 ≤0.40
A53.B ≤0.30
≤1.2 ≤0.045 ≤0.05 ≤0.40 ≤0.40
St45 ≤0.21 ≤0.35 ≥0.40 ≤0.025 ≤0.025


E235 0.17-0.22 ≤0.35 ≤0.40 ≤0.025 ≤0.025


45 0.42-0.50 0.17-0.37 0.50-0.80 ≤0.035 ≤0.035 ≤0.25 ≤0.25 ≤0.25
1045 0.43-0.50 0.17-0.37 0.50-0.80 ≤0.045 ≤0.045 ≤0.40 ≤0.40 ≤0.10
        C45             1.0503 0.42-0.50 ≤0.40 0.50-0.80 ≤0.045 ≤0.045 ≤0.40 ≤0.40 ≤0.10
Гос т   45 0.42-0.50 0.17-0.37 0.50-0.80 ≤0.035 ≤0.040 ≤0.25 ≤0.30 ≤0.30
CK45 0.42-0.50 0.17-0.37 0.50-0.80 ≤0.020 ≤0.025 ≤0.25 ≤0.25 ≤0.20


Mechanical performance parameter:

Steel Grade Tensile Strength Yield strength Elongation Hardness (BK)
Mpa Mpa % HB 
1010 ≥335 ≥205 ≥31 ≤137
STKM 11A ≥295 / ≥35
S10C ≥335 ≥205 ≥31 ≤137
A106 Gr.A ≥330 ≥205 ≥35
St35.8 ≥360 ≥235 ≥25
St37 ≥335 ≥205 ≥31
St35 ≥420 ≥315 ≥8
E215 ≥430
≥8
A53.B ≥415 ≥240 ≥20
 20# ≥410 ≥245 ≥25 ≤156
E235 ≥480 ≥235 ≥25
1020 ≥410 ≥245 ≥25 ≤156
A106 Gr.B ≥415 ≥240 ≥25
St45 ≥580
≥5
E235 ≥480
≥8
S20C ≥410 ≥245 ≥25 ≤156
STKM12A ≥345 ≥175 ≥35
STKM12B ≥390 ≥275 ≥25
STKM12C ≥470 ≥355 ≥20
STKM13A ≥375 ≥215 ≥30
STKM13B ≥440 ≥305 ≥20
STKM13C ≥510 ≥380 ≥15
45# ≥600 ≥355 ≥16 ≤229
CK45 ≥590 ≥345 ≥21 ≤230
C45       1.0503 ≥600 ≥355 ≥16 ≤22


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SAE1045-PIPE



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