304Cu UGIMA - Schmolz + Bickenbach USA

304Cu UGIMA
®
Description
304Cu UGIMA® is an enhanced machining grade produced only by Ugitech, providing
the ultimate level of machinability available in an non-resulfurized austenitic stainless steel.
304Cu UGIMA® also features the added benefit of increased cold formability when
compared with that of standard type 304 stainless steels. The increased copper content in
304Cu UGIMA® provides corrosion resistance superior to 304L and comparable to 316L.
The unique combination of machinability, cold formability, and corrosion resistance afforded
by 304Cu UGIMA® is unique in the industry, and provides the optimum solution for even
the most difficult fabrication challenges.
304Cu UGIMA® builds upon the proprietary UGIMA manufacturing process with the addition
of copper, allowing for unparalleled machinability across a wide range of operations and
cutting conditions. It allows for superior machinability at both low and high speeds, cam-driven
and CNC machines, and with high-speed steel or carbide tooling. Machine shops using
304Cu UGIMA® have experienced consistent success regardless of machine, operation,
tooling, or cutting conditions. From lot to lot, 304Cu UGIMA® is engineered to give the same high
performance every time without surprises.
Shops have reported productivity increases of up to 40% over leading competitive machining grades, and
increases of up to 25% over standard 304/304L UGIMA®. Shops have further reported that 304Cu UGIMA®
machines comparable to many popular 303s. Additional benefits include improved chip breakability and increased tool
life when compared with standard type 304/304L, regardless of the producer.
304Cu UGIMA® is recommended for shops that demand consistent machining performance regardless of the machine
and tooling being used. The cost savings to be realized through increased productivity make 304Cu UGIMA® your
competitive advantage.
Classification
Enhanced machining austenitic stainless steel (300 series).
General Characteristics
AISI Type 304Cu/XM-7
UNS S30430
AMS-QQ-S-763
(Applicable Specifications)
EN 10088-3 Number 1.4567
EN 10088-3 Name X3CrNCuS18-9-4
Available Forms
Cold drawn bars, Turned bars, Ground bars, Wire, SMQTM
Please inquire for additional information on available forms.
Chemical Analysis
Carbon
Manganese
Silicon
Phosphorus
Min.
Mechanical Properties
Tensile Strength
Yield Strength (0.2% Offset Method)
Elongation (% in 4d)
Area Reduction
Brinell Hardness
Max.
0.10
2.00
1.00
0.045
Sulfur
Chromium
Nickel
Copper
Min.
17.00
8.00
3.00
Max.
0.030
19.00
10.00
4.00
(Typical range for 304Cu UGIMA® round bar.)
Cold Drawn Bar (1" dia. & under)
Turned Bar (Over 1" dia.)
85 - 105 ksi (600 - 720 MPa)
70 - 90 ksi (480 - 620 MPa)
70 - 90 ksi (480 - 620 MPa)
30 - 50 ksi (220 - 350 MPa)
28 - 40%
48 - 62%
68 - 75%
70 - 82%
180 - 210 BHN
145 - 185 BHN
304Cu UGIMA
®
Environment
Behavior
Nitric Acid
In general, 304Cu UGIMA® has good corrosion resistance in many environments. The
addition of copper is recognized to improve resistance to corrosion, particularly in acid
mediums. This copper addition allows 304Cu UGIMA® to compare to 316L in many
aspects. The positive effect of the copper addition can be seen in the reduced rate of
Humidity
pitting or crevice growth. It has excellent resistance to intergranular corrosion and has
an equivalent corrosion resistance to 304L in chlorinated medium. Salt spray testing
Phosphoric Acid
has shown the initial formation of pitting is the equivalent to 304L, but 304Cu UGIMA®
has a reduced rate of growth of the pits.
NaCl (Saline Mist)
The corrosion resistance of a stainless steel depends on many factors related to
the composition of the corrosive environment, pH, temperature, velocity, agitation,
Sulfuric Acid
Seawater
Corrosion Resistance
RESTRICTED
Acetic Acid
Petroleum
Sodium Carbonate
It is important to note, maintaining corrosion
resistance at weld zones will require cleaning
and passivation.
crevices, deposits, dissimilar metal contact, metallurgical condition, as well as the
preparation of the surface. The table here is for comparative purposes only and
illustrates the performance in different environments.
Optimum corrosion resistance requires that parts be smooth, and free from surface
contamination such as cutting fluid and foreign particles. Under these conditions,
parts will be passive in air.
304Cu UGIMA
®
Heat Treatment
The annealing heat treatment that gives 304Cu UGIMA® its optimum properties includes heating in
the range of 1900-2000°F (1050-1100°C), followed by rapid cooling with water (quenching).
Forging
(Hot Working)
304Cu UGIMA® is a forging grade. The following conditions are recommended:
• Heat in the range of 2100 - 2230°F (1150-1220°C)
• Forge in the range of 1830 - 2190°F (1000-1200°C)
• Do not heat core over 2350°F (1280°C) during fast forging
• Minimum forge temperature is 1750°F (950°C)
Hardenability
(Cold Working)
304Cu UGIMA is not hardenable by heat treatment. Strength and hardness increase upon
cold work such as drawing and forming, but not as rapidly as for standard type 304/304L. The
addition of copper makes 304Cu UGIMA® much more forgiving than standard type 304/304L
stainless steels in cold-forming operations.
®
The low strain hardening ability and limited sensitivity to martensite transformation makes
304Cu UGIMA® an ideal choice for cold forming operations such as heading, swaging, and
thread rolling.
Magnetic Permeability:
Electrical Resistivity:
Density:
Round bar weight per foot (lbs):
Hexagonal bar weight per foot (lbs):
Square bar weight per foot (lbs):
Mean Coefficient of Linear Expansion:
Modulus of Elasticity in Tension:
Thermal Conductivity:
Typical Magnetic & Electrical Properties
Non-magnetic in the annealed condition.
304Cu UGIMA® will tend to have lower magnetic permeability than 304L in the cold worked
or strained condition. 304Cu UGIMA® will generally exhibit its low magnetic permeability up to
40% cold reduction. Typical magnetic permeability is as low as 1.09 at 30% cold work and is less
than 316L under equivalent conditions. 304Cu UGIMA® is an ideal choice for parts in electrical,
computer, and sensor applications where the low permeability of the grade will have minimal
magnetic interference.
27.6 µΩ - in (700 µΩ - mm) @ 68°F (20°C)
Typical Physical Properties
0.282 lb/in3 (7.8 g/cm3)
2.66 X (bar diameter in inches)2
2.93 X ( bar diameter in inches)2
3.38 X (bar diameter in inches)2
68°F - 392°F (20°C - 200°C) = 9.17 x 10-6 in/in/°F (16.5 x 10-6 cm/cm/°C)
68°F - 932°F (20°C - 500°C) = 10.0 x 10-6 in/in/°F (18.0 x 10-6 cm/cm/°C)
29.02 x 106 psi (200,000 MPa) @ 68˚ F (20˚C)
23.94 x 106 psi (165,000 MPa) @ 932˚ F (500˚C)
9.65 Btu/ft/hr/°F (18.0 W/m/°C) @ 68°F (20°C)
10.4 Btu/ft/hr/°F (16.7 W/m/°C) @ 932°F (500°C)
304Cu UGIMA
®
Welding
304Cu UGIMA® exhibits an excellent welding ability. Welding can be accomplished as easily as 304L using Stick, TIG, MIG,
Laser, or other popular welding techniques. No pre- or post- weld heat treatment is necessary. The following are suggested
filler metals:
• GMAW/MIG: SMA308LM
• GTAW/TIG: SMA308LT
• Electrodes: SMA308L or SMA308LT
Machinability
The key to 304Cu UGIMA® lies in the production process, which combines the proprietary UGIMA manufacturing
technology with the addition of copper to provide the ultimate level of machinability available in an austenitic stainless steel.
The UGIMA® process eliminates the hard and abrasive inclusions that kill machinability and are replaced by highly specific
inclusions that actually benefit machinability. Due to their lower melting points, these inclusions are soft and malleable at
machining temperatures, and act as “solid” lubrication for the cutting tools. The copper addition works in synergy with the
UGIMA process to distinguish the 304Cu UGIMA® grade as the ultimate enhanced machining grade available in an austenitic
stainless steel and tends to machine much like a 303. This leads to unmatched productivity, better tool life, improved surface
finish, and excellent chip control regardless of your machine, operation, tooling, or cutting conditions.
304Cu UGIMA® has been shown to be an excellent choice for deep hole drilling, roll threading, form tapping, and very
intricate machining work. The Ugima and copper synergy reduces machining forces and provides excellent chip control
and breakage never seen in a non-resulfurized austenitic stainless steel.
Bottom line oriented shops recognize the 304Cu UGIMA® does not machine like standard type 304L, but has similarities to
a 303. The table on the following page, in conjunction with the recommendations below, provides a useful guideline for initial
set-up. To realize the optimal potential of either grade, contact your local 304Cu UGIMA® application engineer. A review of
your current set-up will allow for specific recommendations adapted to 304Cu UGIMA®.
All stainless steels are not created equal! Unlock the potential of 304Cu UGIMA® as your competitive advantage.
Machinability Table Guidelines
1. The table values are initial suggestions and can vary depending on machine and cutting conditions.
2. The use of coated tools increases the tool life by 20% to 50% using the same cutting parameters, or it increases the
cutting conditions (speed) by 10% to 15% using the same tool wear.
3. Tooling grades in parenthesis denotes alternate tool material choice.
4. Drill speeds were developed using 118° included angle drills. Increase speeds 10-20% with the use of 130° to 140°
angle drills.
5. Drill cutting conditions are valid for hole depths up to 4 times diameter.
6. Machining speeds and feeds apply to highly rigid equipment. Reductions may be necessary on cross slide operations
or less rigid equipment.
7. When using C1, C2 or C3 carbides, reduce speeds by 25 - 40%.
Machinability Table
304Cu UGIMA
®
Machining
Operation
Turning
Metallurgical
Condition
Depth of
Cut or
Width
(Inches)
0.04
0.08
0.12
0.04
0.08
0.12
0.08
0.25
0.50
Cold Drawn
Annealed
Cold Drawn
1.00
2.00
0.08
0.25
0.50
Forming &
Grooving
Annealed
1.00
2.00
0.08
0.25
0.50
Cold Drawn
1.00
2.00
0.08
0.25
0.50
Shaving &
Skiving
Annealed
Cut-off or
Part-off
1.00
2.00
0.04
0.08
Cold Drawn
Annealed
Drilling
All
Insert
Drilling
All
0.12
0.08
0.12
0.25
0.063
0.125
0.250
0.500
0.750
0.050 - 0.75
0.75 - 1.00
1.00 - 2.50
Reaming
All
0.062
0.125
0.250
0.500
0.750
1.000
Tapping
All
All
Carbide Tooling
HSS Tooling
Cutting Speed
SFPM
100 - 145
95 - 135
85 - 115
110 - 150
100 - 140
95 - 125
105 - 150
105 - 140
95 - 130
95 - 130
95 - 130
120 - 150
110 - 140
110 - 140
100 - 135
100 - 135
110 - 150
110 - 150
100 - 140
100 - 140
95 - 135
120 - 155
110 - 140
110 - 140
105 - 130
100 - 130
110 - 145
100 - 140
75 - 100
110 - 150
100 - 140
85 - 105
30 - 70
35 - 85
65
30 -- 120
115
55 - 120
65 - 140
––
65 - 120
40 - 80
Feed
(ipr)
0.005
0.006
0.006
0.005
0.006
0.006
0.002
0.003
0.002
0.002
0.002
0.003
0.003
0.003
0.002
0.002
0.001
0.002
0.002
0.002
0.002
0.001
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.003
0.0005
0.002
0.003
0.005
0.008
-
0.008
0.010
0.012
0.008
0.010
0.012
0.003
0.004
0.003
0.003
0.003
0.004
0.004
0.004
0.003
0.003
0.002
0.003
0.003
0.003
0.003
0.002
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.004
0.0015
0.003
0.006
0.009
0.012
––
0.002
0.004
0.007
0.015
0.015
0.020
-
0.005
0.008
0.016
0.025
0.030
0.030
––
Type of
Tool
Cutting Speed
SFPM
M2-M3
(T15)
M2-M3
(T15)
M2-M3
(T15)
M2-T15
(M42)
350 - 1000
305 - 810
270 - 740
370 - 1150
300 - 1000
300 - 860
270 - 445
250 - 420
250 - 420
230 - 400
215 - 375
300 - 550
285 - 435
270 - 415
270 - 405
245 - 390
270 - 410
250 - 395
250 - 395
230 - 375
215 - 360
300
285
270
270
245
285
240
205
290
245
220
-
450
430
400
390
370
500
480
425
520
490
450
M2
(M42)
120 - 280
––
140 - 530
190 - 575
210 - 590
M2-M7
(M42)
120 - 280
M2-M7
TiN Coated
––
Feed
(ipr)
0.006
0.007
0.012
0.006
0.012
0.015
0.002
0.003
0.002
0.002
0.002
0.003
0.003
0.003
0.002
0.002
0.001
0.002
0.002
0.002
0.002
0.001
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.003
-
0.008
0.012
0.016
0.008
0.016
0.020
0.003
0.004
0.003
0.003
0.003
0.004
0.004
0.004
0.003
0.003
0.002
0.003
0.003
0.003
0.003
0.002
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.004
0.004
0.0005 - 0.0015
0.002 - 0.004
0.003 - 0.005
0.004 - 0.006
0.006 - 0.009
0.0015 - 0.004
0.002 - 0.005
0.002 - 0.006
0.002 - 0.005
0.004 - 0.008
0.007 - 0.016
0.015 - 0.025
0.015 - 0.030
0.020 - 0.030
––
Type of
Tool
C7
C6
C5
C7
C6
C5
C6
C6
C5
C5
C5
C6
C6
C5
C5
C5
C6
C6
C5
C5
C5
C6
C6
C5
C5
C5
C5
C5
C5
C5
C5
C5
C6-C5
or C2
TiN
Coated
C7
C6
C5
C6-C5
or C3
TiN
Coated
––
The machining data presented within all tables and graphs represent typical working ranges based on field and laboratory
research. Results will vary based on parts to be produced, equipment and tooling utilized, personnel operating the equipment and
customer part specifications. For additional information, contact Technical Support at the Corporate Office: (800) 523-3321.
ANSI to IS0
C5=M30/M40 C6=M10/M20
or P40/P50
or P20/P30
C7=P10/P20
©Copyright 2007, UGITECH USA. All rights reserved.
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Technical Support
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