| Customization: | Available |
|---|---|
| Type: | Alloy Steel |
| Standard: | AISI, ASTM, DIN, JIS, GB, BS |
|
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BS 835m30 En30b DIN 1.6747 30nicrmo16-6 Hot Forged Rolled Q+T Flat Rods Special Steel Round Bar and Plate
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
| Country | Germany | British |
| Standard | EN10250 | BS970 |
| Grade | 30NiCrMo16-6/1.6747 | EN30B/835M30 |
3. EN30B steel chemical composition
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
| 1.6747 | 0.26-0.33 | 0.4 | 0.5-0.8 | 0.025 | 0.025 | 1.2-1.5 | 0.3-0.6 | 3.3-4.3 |
| EN30B | 0.28-0.33 | 0.1-0.35 | 0.4-0.6 | 0.025 | 0.015 | 1.1-1.24 | 0.2-0.4 | 4-4.3 |
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
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block | Thickness 6mm-500mm |
|
| Width 20mm-1000mm |
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| Process | EAF+LF+VD+Forged+Heat treatment(optional) | |
| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; C&F; etc.. | |
| Delivery time | 30-45 days | |
| Application | EN30B 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.
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AISI |
DIN |
JIS |
Stock |
Application |
|
Hot Work Tool Steel |
H11 |
1.2343 |
SKD6 |
√ |
Die Casting Dies,Extrusion Dies, Hammer Dies, |
|
H13 |
1.2344 |
SKD61 |
√ |
||
|
H10 |
1.2365 |
SKD7 |
|
||
|
-- |
1.2367 |
-- |
|
||
|
L6 |
1.2714 / 1.2713 |
SKT4 |
√ |
||
|
H12 |
1.2606 |
SKD62 |
|
||
|
H21 |
1.2581 |
SKD5 |
√ |
||
|
Cold Work Tool Steel |
D3 |
1.2080 |
SKD1 |
√ |
Cutting Tools, Punching Tools, Shear Bladers, Reamers, Thread Rolling Dies, Calipers, Sockets etc. |
|
-- |
1.2601 |
~SKD11 |
√ |
||
|
D2 |
1.2379 |
~SKD11 |
√ |
||
|
-- |
1.2379 MOD |
DC53 (Daido) |
√ |
||
|
D6 |
1.2436 |
-- |
|
||
|
O1 |
1.2510 |
SKS3 |
√ |
||
|
O2 |
1.2842 |
-- |
|
||
|
A2 |
1.2363 |
SKD12 |
|
||
|
S1 |
1.2550 |
-- |
|
||
|
S7 |
1.2357 |
-- |
|
||
|
-- |
1.2767 |
SKT6 |
|
||
|
L2 |
1.2210 |
-- |
|
||
|
Plastic |
P20 |
1.2311 |
-- |
√ |
Mold Base, Core & Cavity, Bumper Mold etc. |
|
P20+Ni |
1.2738 |
-- |
√ |
||
|
P20+S |
1.2312 |
-- |
√ |
||
|
-- |
1.2316 |
-- |
|
||
|
420 |
1.2083 |
SUS420J2 |
√ |
||
|
-- |
-- |
NAK80 (Daido) |
√ |
||
|
Alloy Steel |
4120 |
25CrMo4 / 1.7218 |
SCM420 |
|
Shafts, Gears, Drillers, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Crankshafts, Connecting Rods, Came, Couplings etc. |
|
4135 |
34CrMo4 / 1.7220 |
SCM435 |
|
||
|
4130 |
34CrMo4 / 1.7220 |
SCM430 |
√ |
||
|
4140 |
42CrMo4 / 42CrMoS4 / 1.7225 |
SCM440 |
√ |
||
|
4142 |
41CrMo4 / 1.7223 |
SCM440 |
|
||
|
4145H |
-- |
-- |
|
||
|
4330V |
-- |
-- |
|
||
|
4340 |
34CrNiMo6 / 1.6582 |
SNCM439 |
|
||
|
5115 |
16MnCr5 / 16MnCrS5 / 1.7131 |
|
|
||
|
5120 |
20MnCr5 / 20MnCrS5 / 1.7147 |
SMnC420H |
|
||
|
5140 |
41Cr4 / 41CrS4 / 1.7035 |
SCr440 |
√ |
||
|
8620 |
21NiCrMo2 / 1.6523 |
SNCM220 |
|
||
|
8640 |
40NiCrMo2-2 / 1.6546 |
SNCM240 |
|
||
|
-- |
18CrNiMo7-6 / 17CrNiMo6 / 1.6587 |
-- |
|
||
|
9840 |
36CrNiMo4 / 1.6511 |
-- |
|
||
|
E71400 |
41CrAlMo7-10 / 1.8509 |
SACM1 |
|
||
|
-- |
34CrAlNi7 / 1.8550 |
-- |
|
||
|
Bearing Steel |
E52100 |
100Cr6 / 1.3505 |
SUJ2 |
√ |
Bearing, Shafts |
|
-- |
100CrMn6 / 1.3520 |
-- |
|
||
|
-- |
100CrMo7-3 / 1.3536 |
-- |
|
||
|
Spring Steel |
5155 |
55Cr3 / 1.7176 |
SUP9 |
|
Springs |
|
6150 |
51CrV4 / 1.8159 |
SUP10 |
|
||
|
9261 |
60CrSi7 / 1.7108 |
-- |
|
||
|
Carbon Steel |
1010 |
CK10 / C10E / 1.1121 |
S10C |
|
Shafts, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Came, Couplings etc. |
|
1020 |
C22 / 1.0402 |
S20C |
√ |
||
|
1040 |
CK40 / C40E / 1.1186 |
S40C |
√ |
||
|
1045 |
CK45 / C45E / 1.1191 |
S45C |
√ |
||
|
1050 |
CK50 / C50E / 1.1206 |
S50C |
√ |
||
|
1055 |
CK55 / C55E / 1.1203 |
S55C |
|
||
|
1064 |
CK60 / C60E / 1.1221 |
S58C |
|
||
|
High Speed Tool Steel |
M2 |
1.3343 |
SKH51 |
√ |
Reamer, |
|
M7 |
1.3348 |
-- |
|
||
|
M42 |
1.3247 |
SKH59 |
√ |
||
|
M35 |
1.3243 |
SKH55 |
√ |
||
|
T1 |
1.3355 |
SKH2 |
|
||
|
T15 |
1.3202 |
-- |
|
||
|
T42 |
1.3207 |
SKH57 |
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