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ENDURA
THE PREMIERE WEAR RESISTANT AND WORK HARDENING NEW STEEL
A) GENERAL INFORMATION
If you require a steel which is very tough, very hard, very abrasion resistant, easy to process and weld, and is competitively priced... then TITUS ENDURA is the answer.
B) ENDURA ADVANTAGES
1. Best Wear Resistance...of any abrasion resistant plate
- 8 times greater wear than mild steel
- 1 1/2 times greater than conventional 500 BHN steels
2. Ability to "Work Harden"... from 470 BHN to 540 BHN
3. Ease of Processing...compared to conventional 500 BHN steels
4. Can be Welded with Low Hydrogen Rod... providing a major cost saving
5. No pre or post heating required for welding
Due to precise and uniform addition of Nickel, Chrome, and Molybdenum, ENDURA has:
- SUPERIOR WEAR ABILITY
- SUPERIOR WORK-HARDENING
- SUPERIOR WORK ABILITY
- SUPERIOR WELD ABILITY
ENDURA's unique Micro Structure is uniform and homogenous making it highly abrasion resistant. This is due in part, to the fact that ENDURA is "oil- quenched' during heat treatment. Conventional AR 500 steels are "water- quenched" resulting in an irregular and distorted micro structure.
ENDURA's revolutionary T.R.I.P. effect (Transformation Induced by Plasticity) reduces tearing, shearing, and chip removal.
C) CHEMICAL COMPOSITION
C |
Mn |
Ni |
Cr |
Mo |
S |
P |
<0,280 |
>1,600 |
0,400 |
>1,600 |
>0,200 |
<0,005 |
<0,015 |
D) MECHANICAL CHARACTERISTICS
Delivered Hardness:
430 BHN min, 470 BHN typical value
Toughness:
Guarantee: Kcvl -20° C (-4° F):> 40 J/cm² (>23,6 ft.lbs)
Typical Value at -20° C (-4° F):55 J/cm² (32 ft.lbs)
Tensile Strength at 20° C (68° F)
Indicative values: UTS: 1630 MPa (235 KSI)
Y.S.: 12509 MPa (180 KSI)
EI. (5d): 12%
ENDURA vs HARDOX 500
MANUFACTURING
ENDURA … OIL QUENCHED resulting in a “fine homogenous micro structure” for improved hardness and easier processing.
Small and even dispersion of Carbides provides hardness and abrasion resistance …. Less brittleness and less cracking
Homogenous micro structure provides elasticity effect which limits gouging, tearing and shearing.
Limited amount of “Unstable or Retained Austenite” reduces chipping and cracking
HARDOX … WATER QUENCHED resulting in a “course …. non homogenous microstructure”.
Large and uneven dispersion of carbides provides embrittling effect prone to cracking
Pockets of “Unstable or Retained Austenite” causes chipping and cracking
CHEMISTRY
| |
C |
Mn |
Ni |
Cr |
Mo |
P |
S |
| ENDURA |
.28 |
1.6 |
.4 |
1.6 |
.2 |
.005 |
.015 |
| HARDOX |
.27 |
1.6 |
.3 |
1.0 |
.3 |
.025 |
.010 |
ENDURA … 60% more Chrome for hardness and corrosion resistance. Limited Phosphorous for easier processing and weldability.
HARDNESS
ENDURA … Initial hardness 470 BHN … Work-hardens to 540-560 BHN with impact
Hardox … Typical 490 BHN … no work-hardening properties
Endura’s work-hardening properties … Lower initial hardness for easier processing … but increases 50 -70 brinell points with impact.
MECHANICAL PROPERTIES
- CHARPY/IMPACT
• ENDURA … 32 ft. lbs. @ -20c
• HARDOX … 20 ft. lbs. @ -20c
Endura is 1/3 more resistant to impact and cracking
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TENSILE STRENGHT
• ENDURA … 235,000 p.s.i
• HARDOX … not published. Based on similar AR 500 products estimated at 220,000 p.s.i.
Endura is 7 % tougher before ultimate failure of the steel.
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YEILD
• ENDURA … 180,000 p.s.i.
• HARDOX … not published. Based on similar AR 500 products estimated at 170,000 p.s.i.
Endura has 5-6 % more resistance before deformation of the steel begins.
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ELONGATION
• ENDURA … 12%
• HARDOX … not published. Based on similar AR 500 products estimated at 8% p.s.i.
Endura is 50% more elastic thereby reducing cracking and breaking.
PROCESSING
- Bending
• ENDURA … Radius = 5 times thickness
• HARDOX … Radius = 7 times thickness
Endura is easier to bend and less prone to cracking
Bending radius can be reduced by bending at right angles to the grain or direction of rolling.
- Welding
• ENDURA … No pre or Post heating required up to 2"
• HARDOX … Pre and Post heating required on ALL thicknesses
- Machining
• ENDURA … Possible with High Speed tools
• HARDOX … Tungsten carbide tools only
IN SERVICE
A) REBUILD BUCKET
Actual Field Test … Terra Mining… Rebuild Bucket
| |
ENDURA |
AR 500 |
| # Rebuilds/year |
3 |
6.5 |
| Material Cost |
$ 45,000 |
$ 65,000 |
| Labor |
$23,100 |
$50,050 |
| Lost Production |
$11,355 |
$24,602 |
| Total Cost |
$79,455 |
$139,652 |
SAVINGS $ 61,197 ( 44% )
B) BUCKET LIP
Actual Field Test … BARRICK GOLD CORP … Bucket LIP
| |
ENDURA |
AR 500 |
| PLATE SIZE |
1" |
1 ¼" |
| TONS OF PRODUCTION |
48,500 |
30,000 |
C) MINE TRIPPER CAR
Actual Field Test … IRON ORE COMPANY … Liners Tripper car
| |
ENDURA |
AR 500 |
| Months of Service |
40 |
3 |
| Cost of Liners |
$2,466 |
$19, 248 |
D) REBUILD BUCKET BOWL
Actual Field Test … IRON ORE COMPANY… Rebuild Bucket
| |
ENDURA |
AR 500 |
| Months of Service |
16 |
6 |
| Production |
3 million cu yards |
½ million yards |
Download Document (PDF): ENDURA vs HARDOX |
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