4130 Seamless Alloy Steel Tube
Material name: alloy structural steel
Number: 4130
Standard: ASTM A29/ a29m-04
Corresponding Chinese brand: 30CrMo
Corresponding Japanese brand: SCM430(SCM2)
Corresponding German brand: 34CrMo4(1.7220)
chemical composition:
C :0.28～0.33
Si:0.15～0.35
Mn:0.40～0.60
S :Allowable residual content ≤0.040
P :Allowable residual content ≤0.035
Cr:0.80～1.10
Ni:Allowable residual content ≤0.30
Cu:Allowable residual content ≤0.30
Mo:0.15～0.25
mechanical property
Tensile Strength σb (MPa):≥930(95)
yield strength σs (MPa):≥785(80)
Elongation δ5 (%):≥12
reduction of area ψ (%):≥50
ballistic work Akv (J):≥63
notched bar impact strength αkv (J/cm2):≥78(8)
hardness :≤229HB
Sample size: the blank size of the sample is 25mm
heat treatment specification and metallographic structure:
Heat treatment specification: quenching 880℃, water cooling, oil cooling; Tempering 540℃, water cooling, oil cooling.
Delivery status: delivery in heat treatment (normalizing, annealing or tempering at high temperature) or no heat treatment. Delivery status shall be indicated in the contract.
1:alloy-steel tube（15CrMoG、12Cr1MoVG、35CrMo、42CrMo、1Cr5Mo、1Cr9Mo、12Cr2MoG、10CrMo910、12Cr2MoWVTiB(CrMoWVTiB102)、WB36、A335P11(A213T11)、A335P12(A213T12)、A335P22(A213T22)、A335P91(A213T91)、A335P9(A213T9)、A335P5(A213T5)、STFA22、STPA25、STFA26
specification 16-824X2-100）
2:ASTM PIPE（A106B/SA106B、A106C/SA106C、A333GR1/GR3/GR6、A53B、API5LGR.B、A210C/SA210C specification 18-726X2-50)
3:high-pressure boiler tube（20G、20MnG、ST45.8/III specification 16-824X2-65）
4:Oil cracking pipe（20#、15CrMo specification 10-530X1.5-36）
5:High pressure seamless pipe for fertilizer equipment（20#、16Mn specification 25-426X6-40）
6 :line pipe（L245、L245NB、L245NCS、L290、L290NB、L290NCS、L360、L360NB、L360NCS、X42、X52、X60、X65、X70 Specification 60-824X3.5-60）
7:low-medium pressure pipe（20# specification 10-530X2-40）
8:Delivery pipe（20#，Q345B/C/D/ E specification 8-630X1.0-40）
9:General construction tube（20#、35#、45#、Q345B/C/D/E specification 6-610X1.5-40）
10:Hydraulic prop pipe（27SiMn specification 70-377X9-40）
11:The ship tube（C20 specification 14-426X1.5-45）
12:All kinds of high quality materials can be customized seamless rectangular tube(specification 20-300*1.2-14)
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