Self Black / Blacken / GI Threaded Rods ASTM A193 B7 B7M B16
1.Materials AS193 B7,B7M and B16
ASTM A193 Grade B7 Chromium Molybendum steel, normally AISI 4140, heat treated to 28-32Rockwell Hardness, 125,000 PSI tensile strength, 105, 000 PSI yield. It will hold it's strength to 1000 degrees F. This grade of studbolts are engineered to mate with ASTM A194 Grade 2H Heavy Hex Nuts.
ASTM A193 Grade B7M It has the same chemistry as B7. Physicals have max hardness of 235 Brinell or RC22. 100,000 PSI tensile and 80,000 PSI yield. Used in areas where H2S is present.
ASTM A193 Grade B16 Chromium, molybendum, Vanadium steel. It has the same physicals as B7. Added vanadium allows it to hold it's strength to 1100 degrees Fahrenheit.
2.Threaded Rods sizes we can offer: 1/4"-4"
3.A193 B7 B7M B16 material chemical composition:
| lement |
Content |
| Carbon, C |
0.380 - 0.430 % |
| Chromium, Cr |
0.80 - 1.10 % |
| Iron, Fe |
96.785 - 97.77 % (As remainder) |
| Manganese, Mn |
0.75 - 1.0 % |
| Molybdenum, Mo |
0.15 - 0.25 % |
| Phosphorous, P |
≤ 0.035 % |
| Silicon, Si |
0.15 - 0.30 % |
| Sulfur, S |
≤ 0.040 % |
4.A193 B7 B7M B16 Mechanical property difference:
| Grade |
Sizes |
Tensile ksi, min |
Yield, ksi, min |
Elong, %, min |
RA % min |
HBW |
HRC |
| A193 B7 |
Up to 2-1/2 |
125 |
105 |
16 |
50 |
321 max |
35 max |
| 2-5/8 - 4 |
115 |
95 |
16 |
50 |
| 4-1/8 - 6 |
100 |
75 |
18 |
50 |
| B7M |
Up to 4 |
100 |
80 |
18 |
50 |
235 max |
- |
| Over 4 - 7 |
100 |
75 |
18 |
50 |
| B16 |
Up to 2-1/2 |
125 |
105 |
18 |
50 |
321 max |
35 max |
| Over 2-1/2 to 4 |
110 |
95 |
17 |
45 |
| Over 4 to 8 |
100 |
85 |
16 |
45 |
5.Threaded Rod Surface we supply :
BLACK, DACROMAT, ELECTRO GALVA B633, GREENKOT, HOT DIP GALVANZIED, MECHANICAL GALVANIZED, PTFE, SELF FINISH, YELLOW ( CADMIUM)
6.MOQ: 1 tons
7.Delivery time : 7-30 days upon to your order details
8.Free sample supplied
9.About us
We company have good QC inspection tear and full set of inspect equipment including: UT test machine, Tensile testing machine,Hardness testing machine,Dimensional measuring instrument,f,spectrometer,Metallographic microscope and so on, so that we can always supply good mateterials for various projects and industries , if you have any need for our producrs,please contact us freely.
Q: Are you manufacturer or trading company ?
A: We have factory producing threaded rods for more than 20 years, We owned more than 20 sets of producing equipments.
Q: What's your sample policy ?
A: Our sample is free, but customer may need to pay the express cost.
Q: What's your MOQ ?
A: The MOQ is 100pieces,
Q: What's your delivery time?
A: Generally, our delivery time is 30 days after deposit received, we can adjust our production if your order is urgent.
Q: What's your payment term:
A: Usually, if amount is less than 1000usd, we suggest payment through west union , if amount above 1000usd, we suggest TT or LC.
Self Black / Blacken / GI Threaded Rods ASTM A193 B7 B7M B16
Self Black / Blacken / GI Threaded Rods ASTM A193 B7 B7M B16
Self Black / Blacken / GI Threaded Rods ASTM A193 B7 B7M B16
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