ASTM A681 AISI H11 Steel Round Bar , Hot Work Tool Steel for Pressure Casting Moulds for Light Metal
Steel Grade:
|
H11
|
Application:
|
Die Steel, Mould Steel
|
Shape:
|
Round bar
|
Standard:
|
AISI, DIN, JIS, GB
|
Dimension:
|
Φ10 – 600 mm
|
Surface:
|
Black, Peeled, Turned, Grinded
|
Technique:
|
Hot rolled, Forged
|
Ultrasonic Test:
|
100% UT Passed
|
Description:
◆ Equivalence
AISI / SAE
|
DIN / W.Nr
|
JIS
|
GB
|
H11
|
1.2343
|
SKD6
|
4Cr5MoSiV
|
◆ Chemical Composition (%)
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Mo
|
V
|
0.33
0.43
|
0.80
1.20
|
0.20
0.50
|
≤
0.030
|
≤
0.030
|
4.75
5.50
|
1.10
1.60
|
0.30
0.60
|
◆ Dimensions
|
Hot Rolled
|
Forged
|
Diameter (mm)
|
8-130
|
60-600
|
Length (mm)
|
2000-5800
|
2000-5800
|
◆ Delivery Condition
EAF+(ESR) or EAF+LF+VD+(ESR), Hot rolled or Forged, Annealed, Hardness≤235HB,
Black surface or Machined surface (Peeled, Turned, Grinded), UT 100% Passed
◆ Characteristics
1. H11 is a 5% chromium hot work steel that is characterized by excellent impact toughness. It contains less vanadium than H13. This provides for the higher toughness, with some reduction in wear resistance and temper resistance.
2. Deep-hardening, air-hardening steel that exhibits minimal size change during heat treatment.
3. Good resistance to thermal fatigue cracking (heat checking) and excellent resistance to gross cracking and thermal shock when water cooled in service.
◆ Applications
Heavy duty hot work tools and dies, mainly for light alloy processing: mandrels, dies, and containers for metal tube and rod extrusion; hot extrusion equipment; tools and dies for the manufacture of hollow bodies, screws, rivets, nuts and bolts. Die casting equipment, forming dies, die inserts, hot shear blades, and plastic mould dies.
◆ Forging Technique
Heat
Temperature
|
Start Forging
Temperature
|
Finish Forging
Temperature
|
Cooling Method
|
1020-1150 °C
|
1100-1120 °C
|
900-850 °C
|
Pit or Sand Cooling
|
◆ Heat Treatment
750 to 800°C (1382 to 1472°F)
Slow controlled cooling in furnace at a rate of 10 to 20°C/hr (50 to 68°F/hr) down to
approx. 600°C (1112°F), further cooling in air.
Hardness after annealing: max. 235 HB.
600 to 650°C (1112 to 1202°F)
Slow cooling in furnace; intended to relieve stresses set up by extensive machining,
or in complex shapes.
After through heating, hold in neutral atmosphere for 1 - 2 hours.
1000 to 1040°C (1832 to 1904°F)
Oil, salt bath (500 - 550°C / 932-1022°F), air
Holding time after temperature equalization: 15 to 30 minutes.
Obtainable hardness:
52 - 56 HRC in oil or salt bath,
50 - 54 HRC in air.
Slow heating to tempering temperature immediately after hardening / time in furnace
1 hour for each 20 mm of work piece thickness, but at least 2 hours / cooling in air. It is recommended to temper at least twice.
A third tempering cycle for the purpose of stress relieving may be advantageous.
1st tempering approx. 30°C (86°F) above maximum secondary hardness.
2nd tempering to desired working hardness.
The tempering chart shows average tempered hardness values.
3rd for stress relieving at a temperature 30 - 50°C (86 to 122°F) be low highest tempering temperature.
What we can offer?
We offer a wide range of steel products in a wide variety of dimensions and executions,
acc.to the common international specifications or customerized.
Machining and heat treatment are available.
Also, we advise you in choosing the right materials.
-- 50,000 tons Stock
-- 7 warehouses and branches
-- 47 sets of vertical band saws
-- 100 sets of modern facilities
-- A group of QC technicians
-- Professional technical consulting
Shape Available
◆ Solid round bar
◆ Flat bar
◆ Square bar
◆ Hexagon bar
◆ Block
◆ Plate
◆ Sheet
◆ Wire rod
◆ Strip
|
AISI |
DIN |
JIS |
Stock |
Application |
Hot Work Tool Steel |
H11 |
1.2343 |
SKD6 |
√ |
Die Casting Dies, Extrusion Dies, Hammer Dies,
Ram Dies,
Forging Dies
etc.
|
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
Mould Steel
|
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
etc.
|
—— |
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 |
|
Structural Steel |
A283 |
S235JR / ST37-2 / 1.0037 |
—— |
|
Building Structures,
Oil & Gas Platforms, Palm Oil Euipments,
Dump Trucks,
Transmission Towers
etc..
|
A570 |
S235JRG2 / RSt37-2 / 1.0038 |
—— |
|
A573 |
S235J2G3 / ST37-3 / 1.0116 |
—— |
|
1020 |
S275JR / ST44-2 / 1.0044 |
STK400 |
|
A501 |
S275J2G3 / ST44-3 / 1.0144 |
STK400 |
|
—— |
S355JR / 1.0045 |
SN400B;C |
|
High Speed Tool Steel |
M2 |
|