Model NO.	Seamless Pipe
Technique	Forged/Hot Rolled/Cold Drawn
Material	Carbon Steel/Alloy Steel
Surface Treatment	Polished
Usage	Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
Section Shape	Round
Certificate	ISO, ABS, BV, CCS, Dnv, Lr, Gl, Mill Certificate
Quality Inspection	Ut, Chemical Composition, Physical Properties/SGS
Length	2.5-12mm or Customized
Outside Diameter	4-914mm or Customized
Heat Treatment	Quenched, Tempered, Annealed
Surface Require	Black, Grinding, Bright, Polish
Transport Package	Seaworthy Packing/Wooden Box or at Client's Requir
Specification	Customized
Trademark	OEM & ODM
Origin	China
HS Code	7228400000
Production Capacity	1000 Ton/Month

1. EN30B steel introduction
    EN30B is a 4% nickel air/oil hardening steel. It achieves a good through hardness with high strength and toughness. It is capable of taking a good polish and is widely used as drill bit material

2. EN30B Steel equivalent

CountryGermanyBritish StandardEN10250BS970 Grade30NiCrMo16-6/1.6747EN30B/835M30  
3. EN30B steel chemical composition

GradeCSiMnPSCrMoNi 1.67470.26-0.330.40.5-0.80.0250.0251.2-1.50.3-0.63.3-4.3 EN30B0.28-0.330.1-0.350.4-0.60.0250.0151.1-1.240.2-0.44-4.3  
4. EN30B steel mechanical properties  

    The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.

 

5. EN30B steel overviews

SizeRoundDia 6-1000mm Plate/Flat/BlockThickness
6mm-500mm Width
20mm-1000mm Heat treatmentNormalized ; Annealed ; Quenched ; Tempered Surface conditionBlack; Peeled; Polished; Machined; Grinded; Turned; Milled Delivery conditionForged; Hot rolled; Cold drawn TestTensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc.  Payment termsT/T;L/C;/Money gram/ Paypal Trade termsFOB; CIF; C&F; etc.. Delivery time30-45 days ApplicationEN30B alloy steels are used for Down-hole tools, heavy duty construction tools, rock drilling bit bodies, highly stressed gears and transmission components, heavy duty shafts and rolls.

 

6. Heat Treatment 

Forging - Commence 1200ºC (2190ºF) Max.
Double Annealing - Austenitize 850ºC to 865ºC (1560ºF to 1590ºF)Quench and tempered
Machinability: Double Anneal at 635ºC to 650ºC (1175ºF to 1200ºF)Do not exceed 660ºC (1220ºF)
    A Hardness of 269 HB Max is achievable
Normalize, Temper & Stress Relieve - Austenitize 850ºC to 865ºC (1560ºF to 1590ºF).Air cool to room temperature
    Temper 530ºC (990ºF), air cool
    Stress Relieve 500ºC (930ºF), air cool
Hardened & Tempered Austenitize 850ºC to 865ºC (1560ºF to 1590ºF) Forced air cool or oil quench. Temper at 200ºC (400ºF), air cool.

 

7. Delivery condition
    For hot forged rolled bar, usually the delivery condition is hot forged or rolled, annealed/QT, rough turned/Black surface.
    For hot forged or hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.
    For hot forged plate, usually the delivery condition is hot forged, annealed/QT, milled surface/Black surface
    For hot rolled plate, usually the delivery condition is hot rolled, annealed/QT, black surface.

 

          STYLEMATERIALSTANDARDAPPLICATIONSIZE ALLOY STEEL PIPE12Cr1MoV P22(10CrMo910)
 T91,P91,P9,T9,WB36
Cr5Mo(P11,P12,STFA2)
13CrMo44,Cr5Mo,15CrMo,
 DIN17175-79
JISG3467-88
JISG3458-88
GB5310-95
GB9948-88
ASTMA335/A335M
ASTMA213/A213MPetroleum, Chemical, Electric power, boiler and other industries of high temperature and low temperature corrosion resistance16-824*2-100 Oiled Casing tubeJ55  N80API SPEC 5CTOil Well Tube, Coupling Pipe60-630*1.53-40 High Pressure Boiler Tube20G, A106C,ST45.8/3GB531095
ASTMA106-99
DIN17175-79
 Heat resistant seamless tube for high pressure boiler tube16-824*2-65 Low and Medium Pressure Boiler Tube10 #, 20#GB3087-1999Low and medium pressure boiler, superheated pipe, boiling water pipe10-530*2-40 Petroleum cracking tube20#,12CrMo,15CrMoGB9948-88Seamless tubes for furnace tubes, heat exchanger tubes and pipes for petroleum refining plants10-530*1.5-36 chemical fertilizer equipment20#,16Mn,Q345GB6479-2000chemical fertilizer equipment25-426*6-40 Hydraulic prop tube27SiMnGB/T17396-1998Hydraulic support70-377*9-40 Marine Pipe410GB/T5312-1999Special pressure pipe for ship14-426*1.5-4.5 Line PipeBAPIOil,Gas60-630*1.53-40 Fluid Pipe20#,Q345GB/T8163-1999Fluid, Water8-630*1.5-40 Structural Tube10#,20#,35#,45#,16Mn,Q345BGB/T8162-1999General structural use6-610*1.5-40 Precision TubeSt35,St37.4(10#),St45(20#),
St55(35#),Ck45(45#),St52
(16Mn),CH8Ni9Ti,35Cr0GB/T3639-2000,DIN2391Used inautomobile, motorcycle, engineering machinery, Jack, electric tools, sports equipment4-89